John Wesley Carlos (born June 5, 1945) is an American former track and field athlete and professional football player. He was the bronze-medal winner in the 200 meters at the 1968 Summer Olympics, where he displayed the Black Power salute on the podium with Tommie Smith. He went on to tie the world record in the 100-yard dash and beat the 200 meters world record (although the latter achievement was never certified). After his track career, he enjoyed a brief stint in the Canadian Football League but retired due to injury.

He became involved with the United States Olympic Committee and helped to organize the 1984 Summer Olympics. Following this, he became a track coach at Palm Springs High School. He was inducted into the USA Track & Field Hall of Fame in 2003.

He is the author, with sportswriter Dave Zirin, of The John Carlos Story: The Sports Moment That Changed the World, published in 2011 by Haymarket Books.

Born in The Bronx, Carlos was raised in the Harlem neighborhood of New York City. His mother, Violis (née Lawrence, 1919–2016), was born in Jamaica to Black Cuban parents and grew up in Santiago, Cuba. His father, Earl V. Carlos Sr. (1895–1969), was from South Carolina. Carlos participated in a 200-meter dash and as a member of the 4×400-meter relay helped lead ETSU to the 1967 Lone Star Conference Championship. After his first year, Carlos enrolled at San Jose State University where he was trained by future National Track & Field Hall of Fame coach Lloyd (Bud) Winter.

Carlos was awarded an honorary doctorate from California State University in 2008. In 2012, he was awarded honorary doctorates from his alma maters Texas A&M University-Commerce (formerly East Texas State University) and San Jose State University.

The 1968 Olympic Trials were held on the Californian side of Lake Tahoe at Echo Summit trailhead, which at 7,377 feet above sea level is approximately the same altitude as Mexico City. Carlos won the 200-meter dash in 19.92 seconds, beating world-record holder Tommie Smith and surpassing his record by 0.3 seconds. Though the record was never ratified because the spike formation on Carlos's shoes ("brush spikes") was not accepted at the time, the race reinforced his status as a world-class sprinter.

Carlos became a founding member of the Olympic Project for Human Rights (OPHR), and originally advocated a boycott of the 1968 Mexico City Olympic Games unless four conditions were met: withdrawal of South Africa and Rhodesia from the games, restoration of Muhammad Ali's world heavyweight boxing title, Avery Brundage to step down as president of the IOC, and the hiring of more African-American assistant coaches. As the boycott failed to achieve support after the IOC withdrew invitations for South Africa and Rhodesia, he decided, together with Smith, to participate but to stage a protest in case he received a medal. Following his third-place finish behind fellow American Smith and Australian Peter Norman in the 200 meters at the Mexico Olympics, Carlos and Smith made headlines around the world by raising their black-gloved fists at the medal award ceremony. Both athletes wore black socks and no shoes on the podium to represent African-American poverty in the United States. In support, Peter Norman, the silver medalist who was a white athlete from Australia, participated in the protest by wearing an OPHR badge.

International Olympic Committee (IOC) president Avery Brundage deemed it to be a domestic political statement unfit for the supposedly apolitical, international forum the Olympic Games were claimed to be. In response to their actions, he ordered Smith and Carlos suspended from the US team and banned from the Olympic Village. When the US Olympic Committee refused, Brundage threatened to ban the entire US track team. This threat led to the expulsion of the two athletes from the Games.