Ryk Neethling (born 17 November 1977) is a South African swimmer. He won an Olympic gold medal in the 4×100 m freestyle relay at the 2004 Summer Olympics. He is the former joint owner of the 4×100 m freestyle relay world record and holds several South African records. He also is the first South African to compete four successive Olympic Games.

Born in Bloemfontein, he attended Grey College, where he excelled in swimming, earning a place in the South African swimming team for the 1996 Summer Olympics in Atlanta, where he came fifth in the 1500 m freestyle.

Immediately following the Games he was enrolled at The University of Arizona in the United States of America, where he further cemented his swimming reputation, earning a numerous awards and accolades, including being the 9 times NCAA National Champion, Arizona Athlete of the Year and PAC-10 Athlete of the Year for four consecutive years, 1999 NCAA Swimmer of the Year, and the University of Arizona Athlete of the Century award.

He continued his international career at the 1998 Commonwealth Games, winning the silver medal in the 1500 m freestyle, but only managing fifth at the 1998 World Aquatics Championships. In 1999 he had a much better Pan Pacific Championships winning silver in the 1500 m freestyle, and bronze in the 400 m and 200 m freestyle. After achieving a disappointing 5th in the 1500 m freestyle event and 8th in the 400 m freestyle at the 2000 Summer Olympics in Sydney he elected to discontinue competing in the 1500 m event, concentrating instead on the 50 m and 100 m freestyle events. At the 2002 Commonwealth Games he won a bronze medal in the 100 m freestyle and came 4th in the 50 m freestyle events. At the 2006 Commonwealth Games he won silver in the 100 m freestyle and was part of the S.A gold medal winning 4×100 m freestyle relay team.

Chad Guy Bertrand le Clos (born 12 April 1992) is a South African swimmer who is currently the Commonwealth Games champion and record holder in the 200 metre butterfly. He also won five medals at the 2010 Summer Youth Olympics in Singapore.

Le Clos attended Westville Boys' High School in Durban, South Africa, matriculating in 2010. He has been swimming from a very young age, and when he started competing at the age of 10 he already had a few years of training under his belt.

Chad won the prestigious Daily News Spar Sports Person of the Year in 2010 in which the top school sportsmen are nominated.

At the Commonwealth Games, he collected 2 gold, 1 silver and 2 bronze medals. At the World Short Course Championships, he collected 1 gold medal.

At the 2011 World Aquatics Championships, he finished 5th in the 200m Fly, 13th in the 100m Fly & 10th in the 4x100m Medley

Chad will be competing in the 2012 Olympics in London.