Allen Ong Hou Ming (born 2 November 1979) is a Malaysian former swimmer, who specialised in sprint freestyle events.

[6] Two years later, Ong blasted a Malaysian record of 23.62 to pick up a seventh seed in the 50 m freestyle at the 2002 Asian Games in Busan, South Korea.

[7] At the 2004 Summer Olympics in Athens, Ong shortened his program, swimming only in two individual events.

[2][8][9] In the 100 m freestyle, Ong challenged seven other swimmers in heat four, including fellow two-time Olympians Alexandros Aresti of Cyprus and George Gleason of the Virgin Islands.

[10][11] In his second event, 50 m freestyle, Ong matched his forty-sixth place tie with SEA Games champion Arwut Chinnapasaen on the morning's preliminaries.