On August 22, 1959, the American Football League was officially named during the first meeting of the new league in Chicago. This event marked the formal establishment of the AFL.

The Kansas City Chiefs are a professional American football team that was established on September 16, 1960. They have a strong presence in the NFL and have won multiple championships.

The Dallas Texans had a successful season in the AFL in 1961, finishing 2nd out of 4 teams. Players like Stram, Headrick, Davidson, Haynes, and Burford contributed to the team's performance.

In 1962, the Kansas City Chiefs won the AFL championship, marking their first major victory in the league.

Lamar Hunt officially announced on February 8, 1963, that his team, the Chiefs, was coming to Kansas City. This marked a significant moment in the history of the franchise.

Lamar Hunt sent letters to contest entrants who selected the name CHIEFS in the 'Rename the Texans' contest, revealing the total season tickets sold and announcing the car winner. Mr. E. L. Diemler won the car for suggesting the name inspired by Chief Freight Lines.

After considering moving the team to Atlanta or Miami, Lamar Hunt agreed to relocate the franchise to Kansas City and rename it the Kansas City Chiefs. The new name was determined through a fan contest in honor of Kansas City Mayor Harold Roe Bartle.

Lamar Hunt renamed the team from Kansas City Texans to Kansas City Chiefs after receiving popular suggestions in a name-the-team contest. The name 'Chiefs' was chosen as it maintained a lineage to the team's roots and was also inspired by Mayor Bartle's Native American-based honor society.

In 1964, the Kansas City Chiefs participated in the American Football League (AFL) season. They had notable players like Stram, Grayson, Dawson, Haynes, and Jackson.

In 1965, the Kansas City Chiefs finished 3rd in the AFL with a record of 7-5-2. They had a strong season but fell short of the championship.

On October 2, 1966, the Kansas City Chiefs played their home opener against the defending AFL Champion Buffalo Bills in front of a record crowd of 43,885 in Kansas City.

On New Year's Day, 1967, the Chiefs claimed a dominating 31–7 victory in the AFL title game at Buffalo, propelling them to the first AFL-NFL World Championship Game.

On January 15, 1967, the Kansas City Chiefs faced Vince Lombardi's Green Bay Packers in the first AFL-NFL World Championship Game, later known as Super Bowl I, where the Packers emerged victorious.

On December 22, 1968, the Kansas City Chiefs suffered a 41–6 loss to the Oakland Raiders, marking the beginning of a bitter rivalry between the two teams.

The Kansas City Chiefs defeated the Oakland Raiders with a score of 17-7 in the final AFL Championship Game, becoming the league's only three-time champions.

On January 11, 1970, the Kansas City Chiefs emerged victorious in Super Bowl IV by defeating the Minnesota Vikings, marking a significant milestone in their history.

The Kansas City Chiefs secured a 44-24 victory against Baltimore in just the second-ever telecast of ABC's Monday Night Football package.

The Kansas City Chiefs tied with the Oakland Raiders at 17-17 following a controversial play involving Len Dawson and a spear from Raiders defensive end Ben Davidson, leading to a heated rivalry.

The Kansas City Chiefs secured their first AFC West title with a 16-14 victory against Oakland on December 12, 1971.

The Kansas City Chiefs played in the longest game in NFL history, an AFC Divisional Playoff Game against the Miami Dolphins on Christmas Day in 1971. The game lasted 82 minutes and 40 seconds, with the Dolphins winning 27-24 in double overtime.

Franchise owner Lamar Hunt became the first AFL figure to be inducted into the Pro Football Hall of Fame on July 29, 1972.

Arrowhead Stadium was officially dedicated on August 12, 1972, with the Chiefs registering a 24-14 victory against the St. Louis Cardinals. Running back Ed Podolak scored the first touchdown in the facility.

The Chiefs lost 20-10 against Miami in the first regular season game at Arrowhead Stadium on September 17, 1972, in front of a crowd of 79,829.

A standing-room-only crowd of 82,094 fans witnessed a 27-14 victory against Oakland on November 5, 1972, marking the largest 'in-house' attendance total for an NFL contest in Arrowhead's history.

Following Super Bowl VIII, The AFC-NFC Pro Bowl was held at Arrowhead Stadium on January 20, 1973, with the AFC claiming a 15-13 win thanks to five field goals from Miami placekicker Garo Yepremian.

On December 27, 1974, Hank Stram, the only head coach in Kansas City Chiefs franchise history, was relieved of his coaching duties after compiling a 124–76–10 regular season record with the club. The 35-15 loss against the Minnesota Vikings in the final game of the season marked an anticlimactic end to Stram's coaching career with the Chiefs.

On January 23, 1975, Paul Wiggin was named the second head coach in Kansas City Chiefs franchise history. He inherited a team that needed rebuilding due to age and lack of first-round draft choices. Despite a challenging start, Wiggin led the team to some notable victories during the season.

In August 1976, Jack Steadman was promoted to team president and Jim Schaaf was named general manager of the Kansas City Chiefs. These changes in leadership occurred as the team was undergoing transitions on and off the field.

On Halloween of 1977, Paul Wiggin was relieved of his coaching duties as the head coach of the Kansas City Chiefs. This marked the only in-season coaching switch in the team's history.

On December 19, 1977, Tom Bettis was named interim coach of the Kansas City Chiefs following the dismissal of Paul Wiggin. Bettis led the team to a victory in his first game as interim coach.

On December 20, 1977, Marv Levy, the former head coach of the CFL's Montreal Alouettes, was named the fourth head coach in Kansas City Chiefs franchise history. This marked a new era for the team.

In a game against Cincinnati on September 3, 1978, the Kansas City Chiefs made a staggering 69 rushing attempts, the most in an NFL contest since 1948. This was part of their strategy to keep their struggling defense off the field.

The 1979 NFL season saw the Kansas City Chiefs ranking 5th out of 5 teams with a record of 8 wins and 2 losses. Notable players for the team included Levy, Barbaro, Fuller, McKnight, and Smith.

In 1980, the Kansas City Chiefs participated in the NFL season, finishing 3rd out of 5 teams with a record of 8 wins and 3 losses. Key players for the team included Levy, Barbaro, Fuller, McKnight, and Marshall.

Running back Joe Delaney rushed for 1,121 yards in 1981 and was recognized as the AFC Rookie of the Year.

A 57-day strike by the NFL Players Association began at midnight on September 20, resulting in the cancellation of six games and the rescheduling of one. The strike concluded on November 17, impacting the Kansas City Chiefs' season.

Center Jack Rudnay, a durable and decorated offensive performer for the Kansas City Chiefs, announced his retirement after the 1982 season.

Head coach Marv Levy was fired by the Kansas City Chiefs on January 4, 1983, after compiling a 31–42 record.

On June 29, 1983, Kansas City Chiefs player Joe Delaney tragically drowned while trying to save the lives of three youngsters in Monroe, Louisiana. He was posthumously awarded the Presidential Citizen's Medal by Ronald Reagan on July 13.

Starting QB Steve Fuller was traded to the Los Angeles Rams on August 19, 1983, with Bill Kenney and Todd Blackledge on the Kansas City Chiefs' roster.

Pro Bowl safety Gary Barbaro signed with the New Jersey Generals on February 2, 1984, after sitting out the entire 1983 campaign in a contract dispute, marking a notable departure from the Kansas City Chiefs.

Kansas City Chiefs' defense registered a team-record 11.0 sacks in a 10–6 win against Cleveland on September 30, 1984, coming one sack shy of the NFL single-game record.

On October 14, 1984, the Kansas City Chiefs faced off against the San Diego Chargers in a match where the Chiefs emerged victorious with a score of 24-10.

Safety Deron Cherry tied an NFL record by registering four interceptions in a 28–7 win against Seattle on September 29, 1985, showcasing a remarkable performance for the Kansas City Chiefs.

Despite being outgained in total yardage, the Chiefs secured a 24–19 victory in the regular season finale at Pittsburgh, earning an AFC Wild Card berth with a 10–6 record.

Following a playoff loss, John Mackovic was relieved of his duties as head coach on January 8, leading to Frank Gansz being reinstated as the sixth head coach in franchise history.

A 24-day players strike began on September 22, resulting in the cancellation of the Chiefs' contest against Minnesota and the participation of replacement players in games for the next three weeks.

The Chiefs' replacement squad faced an earthquake in Los Angeles on October 4, prior to a contest against the Raiders, resulting in a 35–17 loss for Kansas City.

The regular roster of the Chiefs returned on October 25 at San Diego after the strike, with Kansas City facing five straight losses and a team-record nine-game losing skid.

Todd Blackledge was traded to Pittsburgh on March 29, as part of notable trades made by the Chiefs to improve on their 4–11 finish in 1987.

President Jack Steadman resigned from his position on December 8, while general manager Jim Schaaf was relieved of his duties on the same day. Steadman later became the chairman of the board.

After compiling a 8–22–1 record in two seasons, Frank Gansz was relieved of his duties as head coach on January 5, 1989.

Former Cleveland Browns head coach Marty Schottenheimer was named the seventh head coach in Chiefs history on January 24, succeeding Frank Gansz.

On December 19, 1988, owner Lamar Hunt appointed Carl Peterson as the president, general manager, and CEO of the Kansas City Chiefs, leading to significant changes in the team's management.

Former defensive tackle Buck Buchanan was inducted into the Pro Football Hall of Fame on August 4, 1990.

Free agent running back Barry Word produced a team-record 200-yard rushing outburst in a 43–24 victory against Detroit on October 14, 1990.

Derrick Thomas established an NFL single-game record with 7.0 sacks in a game against Seattle on November 11, 1990.

Former placekicker Jan Stenerud became the first of his position to be inducted into the Pro Football Hall of Fame on July 27, 1991.

On September 1, 1991, the Chiefs defeated the Atlanta Falcons 14–3 in front of a sold-out crowd at Arrowhead Stadium.

The Kansas City Chiefs played their first home Monday Night Football game in eight years, defeating the defending AFC Champion Buffalo Bills 33-6 at Arrowhead Stadium.

The Kansas City Chiefs secured their first post-season victory since Super Bowl IV by defeating the Los Angeles Raiders 10-6 in an AFC Wild Card Game, thanks to six turnovers by the Raiders.

The Kansas City Chiefs signed quarterback Dave Krieg as a 'Plan B' free agent, who became the club's starter for the upcoming season.

First-round draft pick, cornerback Dale Carter, won the Bert Bell Trophy as the NFL's Rookie of the Year after making an immediate impact with a 46-yard punt return touchdown in his debut game.

Running back Christian Okoye surpassed Ed Podolak as the all-time leading rusher in Kansas City Chiefs' history during a game against Seattle.

The Kansas City Chiefs clinched their first AFC West title since 1971 after a Raiders loss, finishing the season with an 11-5 record.

The Kansas City Chiefs traded for Joe Montana, a legendary quarterback who had led the San Francisco 49ers to four Super Bowl victories in the previous decade.

Joe Montana and Marcus Allen made their debuts for the Kansas City Chiefs in a 27-3 win against Tampa Bay, with Montana appearing in his first Opening Day game since 1990.

Linebacker Derrick Thomas was named the NFL's Man of the Year for his contributions both on and off the field, particularly for his work in promoting children's literacy through 'The Third and Long Foundation'.

In a thrilling AFC Wild Card game, Joe Montana led the Kansas City Chiefs to a 27–24 overtime victory against Pittsburgh, showcasing his 'Montana Magic' with a brilliant comeback.

Facing the red-hot Houston Oilers, Joe Montana orchestrated another remarkable comeback, guiding the Chiefs to a 28–20 victory in the AFC Divisional Round.

The Kansas City Chiefs made their initial AFC Championship Game appearance at Buffalo, but Joe Montana was knocked out of the contest early as the Buffalo Bills claimed their fourth straight AFC title with a 30–13 win.

After 16 years in the NFL, Joe Montana announced his retirement from football on April 18, 1995, leaving a remarkable legacy behind.

In a memorable Monday Night Football game, the Kansas City Chiefs secured a 29–23 victory against San Diego, with wide receiver Tamarick Vanover's 86-yard punt return for a touchdown proving to be the winning play.

In a game against San Diego, Rich Gannon took over as quarterback for Steve Bono in the second half, leading the team to a 28–24 victory.

Despite a 20–9 loss to the Bills, the Chiefs still had a chance to make the playoffs, but a missed field goal by Atlanta secured the final Wild Card spot for the Jaguars, ending the Chiefs' postseason hopes.

Kansas City signed free agent quarterback Elvis Grbac, marking the beginning of a roster retooling for the 1997 season.

In a Monday Night Football game against Oakland, Elvis Grbac threw a 32-yard touchdown pass to Andre Rison with just 0:03 remaining, securing a 28–27 victory for the Chiefs.

Pete Stoyanovich made a memorable 54-yard field goal as time expired to secure a 24-22 victory for Kansas City against Denver.

The Chiefs' defensive unit achieved a remarkable 30-0 shutout win against Oakland, showcasing their dominance in the 1997 season.

The Chiefs finished the 1997 season with six consecutive victories, marking a historic achievement in team history.

Following the 1998 season, head coach Marty Schottenheimer announced his resignation from the Kansas City Chiefs. This marked the end of his tenure with the team.

The Kansas City Chiefs had a successful season in 1999, finishing 2nd in their division. Players like Cunningham, Hasty, Grbac, Bennett, and Gonzalez made significant contributions to the team's performance.

On January 23, 2000, Chiefs' player Derrick Thomas was paralyzed in a car accident. He tragically passed away weeks later due to complications from his injury.

On October 4, 2001, the Kansas City Chiefs played against Vermeil's team in the NFL. The game ended with a score of 44-24.

The 2002 season saw the Kansas City Chiefs finishing 4th in their division. Under the coaching of Vermeil, players like Holmes, Green, and Kennison played key roles in the team's performance.

In 2003, the Chiefs had a potent offense that led them to a 13-3 record. Despite high expectations, they fell short in the playoffs after a strong start.

The 2004 season for the Kansas City Chiefs saw them finishing 3rd in their division with a record of 7 wins and 9 losses. Coached by Dick Vermeil, the team had notable players such as Trent Green, Priest Holmes, and Tony Gonzalez.

In 2005, the Kansas City Chiefs had a successful season finishing 2nd in their division with a record of 10 wins and 6 losses. The team was led by head coach Dick Vermeil and key players like Larry Johnson, Trent Green, and Eddie Kennison.

Kansas City Chiefs were awarded a Thanksgiving Day game against the Denver Broncos in 2006. The Chiefs won the game 19-10, which was the first Thanksgiving Day game in Kansas City since 1969.

Chiefs owner Lamar Hunt died on December 13, 2006, after a ten-year battle with prostate cancer. His passing led to his four children inheriting ownership of the Chiefs.

On June 5, 2007, the Chiefs agreed to trade quarterback Trent Green to the Miami Dolphins for a conditional fifth-round pick in the 2008 NFL Draft.

In 2008, the Kansas City Chiefs participated in the NFL and secured the 4th position out of 4 teams in their division. Notable players for the team included Edwards, Bowe, Thigpen, Johnson, and Gonzalez.

On January 13, 2009, the Chiefs named New England Patriots executive Scott Pioli as the team's new general manager.

On January 23, 2009, head coach Herm Edwards was fired from his position. This marked a significant change in the coaching staff of the Chiefs.

Former Arizona Cardinals offensive coordinator Todd Haley was hired as the 11th head coach of the Chiefs on February 6, 2009. His appointment followed the firing of Herm Edwards.

On September 20, 2009, a new Warpaint horse was unveiled at the Kansas City Chiefs' home opener. The horse was ridden by a cheerleader in its return.

The Chiefs started the 2010 season with a 3-0 record, including their first Monday Night Football win in a decade and a division title win since 2003. Despite a strong start, they faced challenges and ended the season with a 10-6 record, losing in the wild card round of the playoffs.

On January 9, 2011, the Chiefs lost their home Wild Card playoff game to the Baltimore Ravens with a score of 30–7.

Tony DiPardo, the trumpeter known for playing at Chiefs home games, passed away on January 27, 2011, at the age of 98 after being hospitalized due to a brain aneurysm.

After a poor start, Todd Haley was relieved of his duties as head coach on December 12, 2011.

On December 1, 2012, Chiefs linebacker Jovan Belcher tragically murdered his girlfriend before taking his own life at Arrowhead Stadium. The incident shocked the sports world and raised questions about mental health and gun violence.

Following the tragic events involving Jovan Belcher, the Chiefs played against the Carolina Panthers the next day amidst controversy. The emotional game ended with a 27-21 victory for the Chiefs.

On January 5, 2013, Andy Reid was hired as the head coach of the Kansas City Chiefs. Under his leadership, the team has achieved remarkable success, making the playoffs consistently and securing multiple division titles.

In their home opener against the Dallas Cowboys, the Chiefs wore red jerseys with red pants for the first time in team history, creating an all-red combo. This uniform combination has become official and is frequently used for prime-time games at home.

Despite taking a 38–10 lead in the third quarter, the Kansas City Chiefs were unable to contain the Indianapolis Colts offense and lost the game 45–44 in the first round of the 2013–14 NFL playoffs.

Despite a strong season and LB Justin Houston setting a franchise record with 22.0 sacks, the Kansas City Chiefs missed the playoffs in the 2014 season with a 9–7 record.

The Kansas City Chiefs defeated the Houston Texans 30–0 in the 2015 AFC Wild-Card playoff game, earning their first NFL playoff win in 23 seasons.

Despite winning their first playoff game in 22 years, the Kansas City Chiefs were unable to beat the New England Patriots in the divisional round. Injuries and turnovers led to a 27-20 loss for the Chiefs.

After an eleven-game winning streak, the Kansas City Chiefs clinched a playoff spot in the 2015 season, with a chance to win the AFC West in the final week if the Denver Broncos lost.

The Kansas City Chiefs clinched the division title in the 2016 season by defeating the San Diego Chargers in Week 17. This victory secured a first-round bye for the Chiefs.

The Kansas City Chiefs clinched the AFC West and the second seed going into the playoffs in 2017, but fell to the Pittsburgh Steelers 18–16 in the divisional round.

On June 22, 2017, the Chiefs fired John Dorsey from his position as general manager.

On July 10, 2017, the Chiefs hired Brett Veach as the new general manager.

On September 26, 2017, the player signed with Kansas City.

The Kansas City Chiefs clinched the AFC West title in Week 16 of the 2017 season, marking the first time in team history that they had won back-to-back division titles.

The Kansas City Chiefs faced the Tennessee Titans in the 2017-18 NFL playoffs. Despite initially leading 21-3, the Chiefs lost a close game with a final score of 22-21, with standout performances from rookie Kareem Hunt.

In the 2018-19 NFL playoffs, the Kansas City Chiefs faced the Indianapolis Colts in the divisional round. The Chiefs secured a convincing 31-13 victory, showcasing a strong rushing game and solid defense.

After defeating the Indianapolis Colts, the Kansas City Chiefs hosted the AFC Championship Game for the first time in team history. This marked a significant milestone for the franchise.

The Kansas City Chiefs defeated the Indianapolis Colts 31-13 in the AFC Divisional round on January 12, 2019, advancing to the AFC Championship Game.

The Kansas City Chiefs defeated the Tennessee Titans 35-24 in the AFC Championship Game on January 20, 2019, advancing to Super Bowl LIV for the first time in 50 years.

On April 15, 2019, the player re-signed with Kansas City.

On June 13, 2019, the player re-signed with Kansas City.

The Kansas City Chiefs won Super Bowl LIV on February 2, 2020, by defeating the San Francisco 49ers 31-20. Patrick Mahomes led the team to victory and was named the Super Bowl MVP.

On July 6, 2020, Patrick Mahomes signed a record ten-year, $503 million contract extension with the Kansas City Chiefs, making it the largest contract in North American sports history.

On December 26, 2021, the Kansas City Chiefs beat the Pittsburgh Steelers 36-10, securing their sixth consecutive AFC West division title.

In 2022, the Kansas City Chiefs won the Super Bowl, adding another championship to their record. The team's success continued with this victory.

Harrison Butker, the Kansas City Chiefs' kicker, successfully made a crucial game-tying field goal with just 3 seconds left in regulation, leading Super Bowl LVIII into overtime.

On November 5, 2023, in Frankfurt Germany, Andy Reid tied former Chiefs head coach Hank Stram for the most regular season wins in the franchise's history with 124 victories, solidifying his legacy with the team.

The past season marked the 60th year for the Chiefs in Kansas City. The team's historian highlighted some of the franchise's history, reflecting on the journey since Lamar Hunt's announcement in 1963.

The Kansas City Chiefs will host the Baltimore Ravens in the 2024 NFL Kickoff Game on September 5. This game is a rematch of last season's AFC Championship Game.