Ang Peng Siong a competitive swimmer from 1977 to 1993, was ranked world's No.1 in 1982 when he clocked a time of 22.69s in the 50m freestyle at the US Nationals. That record which he set for the 50m freestyle remains the national record till this day. Ang is the fourth child in a family of five siblings. His father, Ang Teck Bee, a 1964 judo Olympian and former pool supervisor at Farrer Park, introduced his children to sports at an early age. Ang learned swimming from his father at the tender age of five. Ang's father also put him and his siblings under a regime of weight-lifting exercises during his secondary school days. Ang Peng Siong credited the discipline he learned to his swimming coaches from his Anglo-Chinese School, Wee Moh Nam and Leen Wei Ling, as well as the weight-lifting programme he underwent in the development of his early swimming career.
Retirement from Swimming :-
On 11 August 1993, Ang announced his retirement from competitive swimming. At that time, Ang needed to raise $75,000 for his participation in the Asian Games but sponsorship was not forthcoming. Two years later, he founded the Aquatic Performance Swim School at Farrer Park and has since groomed many sports personalities like Leslie Kwok and Mark Chay. Ang Peng Siong also coaches swimmers from the Singapore Paralympics Team. On 24 March 2009, the papers reported that Ang was the national head swimming coach. The search by Singapore Swimming Association (SSA) started in the mid-2004. His jobscope in his four-year contract with the SSA is not only to coordinate and plan the policies, strategies and national objectives for the high performance team but also to organise and lend focus to the national team.
Ang Peng Siong chose to quit his position as managing director of Aquatic Performance Swim School as a result. Ang is the first Singaporean to be appointed to such a high-profile position by the SSA. Ang Peng Siong has also been the head coach of the Singapore swimming team at various major events such as Southeast Asian (SEA) Games, Asian Games, Commonwealth Games and Olympic Games. He was also one of the Board of Governors of the Singapore Sports School. For his portfolio with SSA, he would be assisted by Carol Capitani, the assistant head coach.