Nathan Adrian is an American swimmer and three-time Olympic gold medalist. At the London Games in 2012, he won two gold medals and one silver.
Muhammad Ali is considered one of the greatest athletes in boxing history, winning both the coveted Golden Gloves title and an Olympic gold medal, among several other honors.
Forward Carmelo Anthony is one of the most prolific scorers in the NBA. Drafted by the Denver Nuggets in 2003, he was traded to the New York Knicks in 2011.
Lance Armstrong is a professional American cyclist and testicular cancer survivor who, in 2012, was stripped of the seven Tour de France titles he won from 1999 to 2005 due to evidence of performance-enhancing drug use.
Sprinter Evelyn Ashford is a five-time Olympian who became the first woman to run 100 meters in under 11 seconds and the oldest American woman to win an Olympic gold medal in track and field in 1992.
Retired NBA player Charles Barkley was part of the 1992 U.S. Olympic "Dream Team" and was named one of the league's 50 greatest players in 1996.
Swimmer Amanda Beard competed in four Olympic Games, the first in 1996 when she was just 14 years old. She appeared on the cover of Playboy in 2007.
Jamaican sprinter Yohan Blake holds the world record for the 4-by-100-meter relay. In 2012, he won a silver medal in both the 100-meter and 200-meter races, losing to rival and fellow Jamaican Usain Bolt in both events.
Usain Bolt became the first man in Olympic history to win both the 100-meter and 200-meter races in world record times in 2008. Four years later, at the London Olympics, he became the first man to win gold medals in both the 100 and 200 at consecutive Olympic Games and the first man in history to set three world records in a single Olympic Games competition.
Kobe Bryant is an NBA athlete who's one of the leading players in career points, having earned multiple championship rings. He has also won two Olympic gold medals with the U.S. basketball team.
Veronica Campbell-Brown is the youngest Jamaican woman to win an Olympic medal. At the 2012 Olympic Games, she became a six-time Olympic medalist.
Former pro-tennis player Jennifer Capriati is known for her incredible comeback after several personal struggles. In 1990 she was the youngest player to ever be ranked in the Women's Tennis Association top ten.
In 2004, athlete Maritza Correia made history as the first African-American woman to earn a place on the U.S. Olympic Swim Team. She later became the first African-American woman to break an American record.
Swimmer Natalie Coughlin has won more than 10 Olympic medals in her career, including two gold medals at the 2004 Olympics in Athens.
Sidney Crosby is a Canadian professional ice hockey player for the Pittsburgh Penguins. In 2007, he became the youngest captain of a National Hockey League team.
Willie Davenport was an Olympic athlete and medal winner and one of only a few Americans to compete in both the Summer and Winter games.
In 1996, Dominique Dawes won Olympic gold with the U.S. women's gymnastics team as well as an individual bronze medal—becoming the first African American to win an individual Olympic medal in women's gymnastics.
Soccer player Ronaldo starred for the Brazilian national team and several European clubs over the course of a career that spanned nearly two decades.
American track athlete Gail Devers overcame Graves disease, a thyroid disorder, to win Olympic gold medals in 1992 and 1996.
Olympic gymnast Gabby Douglas is best known as the first African American to win the individual all-around event. She also won a team gold medal for the U.S. at the 2012 Summer Olympics.
Basketball player Tim Duncan has led the San Antonio Spurs to multiple championships and is widely hailed as one of the greatest power forwards in NBA history.
Kevin Durant is a top-scoring American professional basketball player, who plays for the National Basketball Association's Oklahoma City Thunder franchise.
At the Summer Games in London, Ashton Eaton—the youngest to member of the U.S. decathlon team that year, at age 24—took home the decathlon gold medal.
American swimmer Gertrude Ederle achieved fame when she competed in the 1924 Olympics and became the first woman to swim across the English Channel in 1926.
Teresa Edwards is an American basketball player best known for winning five Olympic medals in women’s basketball including four gold and one bronze.
British track and field star Jessica Ennis won a gold medal in the heptathlon at the 2012 Summer Olympics in London.
Boxer Marlen Esparza is the first American female to qualify in her sport at the Olympics. At the 2012 Summer Olympic Games, she won a bronze medal.
Barney Ewell was one of the leading sprinters of the 1940s, and won three medals at the 1948 Olympics.
Patrick Ewing is a Jamaican-American retired Hall of Fame basketball player best known for winning Olympic Gold Medals in 1984 and 1992 for U.S. Men's Basketball.
Allyson Felix is a three-time Olympic gold medalist. At the 2012 Olympic Games in London, she won two gold medals, in the women's 200 and the 4-by-100-meter relay.
Figure skater Peggy Fleming won the only U.S. gold medal in the 1968 Olympics. Later, she publicly battled breast cancer, beating it with radiation therapy.
George Foreman is a retired American boxer who twice won boxing's heavyweight championship. After retiring, he became a popular pitchman.
At the 2012 London Olympics, Missy Franklin won gold in both the 100-meter and 200-meter backstrokes, and two more gold medals with the 4-by-200-meter and 4-by-100-meter relay teams.
Sprinter Shelly-Ann Fraser-Pryce became the first Jamaican woman to win the 100-meter Olympic gold medal in 2008. She won her second straight 100-meter Olympic gold medal at the 2012 Summer Olympics.
Joe Frazier was the world heavyweight boxing champion from February 1970 until January 1973 and fought in the famous "Thrilla in Manila" in 1975.
Spanish professional basketball player Pau Gasol is a two-time NBA champion with the Los Angeles Lakers. He was Spain's flag bearer during the opening ceremony of the 2012 Olympic Games in London.
Justin Gatlin sprinted to fame by setting a world record in the 100-meter race. Months later, he tested positive for a banned substance and was suspended. Gatlin is slated to make a comeback at the 2012 Summer Olympics.
Ekaterina Gordeeva is a Russian figure skater who, with her late partner and husband Sergei Grinkov, was a two-time Olympian and four-time world champion.
Steffi Graf is an internationally renowned pro tennis player who ranked up scores of championship titles in the 1980s and '90s.
Dorothy Hamill is a gold medal-winning Olympic figure skater known for her moves on the rink as well as her signature bobbed haircut.
Scott Hamilton is a U.S. Gold Medal Olympiad also known for his sports commentary and raising cancer awareness.
Mia Hamm is a former American soccer player who has scored more international goals than any other player, male or female.
Robert Harting is a German discus thrower and Olympic gold medalist. Known for tearing open his shirt after big wins, he is often called "The Incredible Hulk."
Sonja Henie was a Norwegian figure skater who won three Olympic gold medals. After retiring from skating, she acted in Hollywood films like The Thin Ice.
Boxer Evander Holyfield fought in the Olympics and reigned as the world heavyweight champion from 1990 to 1992, and again from 1993 to 1994. In an infamous bout in 1996, Holyfield's ear was bitten by Mike Tyson.
American professional basketball player Dwight Howard began playing with the Los Angeles Lakers in 2012. Prior to that, he was a star with the Orlando Magic.
At 16, Sarah Hughes won the 2002 Olympic women’s figure skating gold medal as the result of a thrilling long program.
LeBron James, one of the NBA's leading players, is the youngest player to win the Rookie of the Year Award, among several other distinctions. He led the Miami Heat to an NBA champion victory in 2012.
One of the most beloved athletes of the 1970s, track athlete Bruce Jenner won a gold medal and set a world record in the decathlon at the 1976 Summer Olympics. Since then, he's appeared on the popular reality show Keeping Up with the Kardashians.
Rafer Johnson is an American athlete who won a gold medal in the decathlon in the 1960 Olympic Games in Rome.
Shawn Johnson is an American gymnast who won a gold medal for the balance beam at the 2008 Summer Olympics in Beijing, China when she was only 16 years old. In 2009, she was the winning contestant on Dancing with the Stars.
Michael Jordan is a former American basketball player who led the Bulls to six national championships and earned the NBA Most Valuable Player Award five times.
Olympic gold medalist Florence Joyner brought style to track and field with form-fitting bodysuits, six-inch fingernails and amazing speed. She still holds the world records in the 100- and 200-meter events.
Jennifer Kessy is a beach volleyball player, who, along with teammate April Ross, won a silver medal at the 2012 Olympic Games.
Professional basketball player Jason Kidd is one of the top point guards in the sport. He helped the Dallas Mavericks win the NBA Championship in 2011.
Jean-Claude Killy is a French former champion alpine skier who won three gold medals at the 1968 Winter Olympics.
Suzanne Lenglen was a French tennis player who won 31 championship titles between 1914 and 1926. She is largely credited as the first female tennis star.
Sugar Ray Leonard was a champion Olympic and professional welterweight boxer. He retired from the sport in 1997 and was inducted into the Boxing Hall of Fame.
Lisa Leslie was an All-Star basketball player, Olympic gold medalist and WNBA league MVP.
American gymnast Danell Leyva is best known for being the first Cuban-American and Miami resident to make it to the United States Olympic men's gymnastics team, and for winning a bronze medal at the 2012 Summer Olympics in London.
British runner Eric Lidell won a gold medal in the 1924 Olympic Games. The movie Chariots of Fire (1981) tells the story of his triumph.
Anastasia Valeryevna Liukin, better known as Nastia Liukin, is a world-renowned gymnast and Olympian who was named the Olympic individual all-around Champion in 2008.
Ryan Lochte is an American swimmer who has won 11 Olympic medals in the sport, including five golds.
Cuban Mijain Lopez won a gold medal for wrestling at the 2008 Summer Olympics, where he served as Cuba's opening-ceremony flagbearer.
American diving champion Greg Louganis won 13 world championships and made history at the 1982 Olympics as the first diver ever awarded a perfect score.
Arthur Leslie Lydiard is a former marathon runner from from New Zealand and a coach of Olympic gold medalists. He popularized jogging in the 1960s.
American gymnast McKayla Maroney won a gold medal with the U.S. Olympics gymnastics team and a silver medal for the vault at the 2012 Summer Olympics.
Misty May-Treanor is a professional beach volleyball player and three-time Olympic gold medalist. She is the longtime competitive partner of Kerri Walsh-Jennings.
American boxer Floyd Mayweather is one of the best pound-for-pound fighters of his generation. HBO's documentary about him, 24/7, increased his popularity.
American gymnast Dominique Moceanu was a member of the "Magnificent Seven," the U.S. women's gymnastics team that won Olympic gold in 1996.
Alex Morgan was the youngest member of the U.S. women's national team during the 2011 FIFA Women's World Cup, and won a gold medal with the U.S. Olympic women's soccer team in 2012
Photographer Nickolas Muray was famous for his portraits of Hollywood beauties, his fabulous fencing skills and his romance with artist Frida Kahlo.
Andy Murray is a three-time Grand Slam runner-up. He lost to rival Roger Federer at Wimbledon in 2012, but beat Federer at the 2012 Summer Olympics for the singles gold medal.
Spanish-born Rafael Nadal is widely regarded as one of the greatest professional tennis players of all time, completing the career Grand Slam by age 24, the youngest in history to achieve the feat.
Standing 7 feet tall and weighing 315 pounds, Shaquille O'Neal was one of the most dominant players in the NBA. After his 2011 retirement, he became an on-screen league analyst.
Apolo Anton Ohno is an Olympic champion speed skater who holds the record for most medals won by a U.S. Winter Olympian.
American track-and-field athlete Jesse Owens won four gold medals at the 1936 Berlin Olympic Games. His long jump world record stood for 25 years.
American boxer Floyd Patterson was the first to hold the world heavyweight championship twice. He won a gold medal in the 1952 Olympic Games.
Swimmer Michael Phelps has set the record for winning the most medals, 22, of any Olympic athlete in history.
Olympic medalist Mark Phillips is renowned as the commoner who married Princess Anne.
American gymnast Aly Raisman won two gold medals and a bronze at the 2012 Summer Olympic Games, held in London.
Mary Lou Retton is a retired champion gymnast who won gold, silver and bronze medals at the 1984 Olympics. She was featured on the Wheaties cereal box.