P. C. Suppiah (born 10 August 1949) is a Malaysia-born Singaporean former athlete.

[1][5] He was Singapore's first long-distance runner at the Olympics.

[1] He moved to Singapore as a child after his father's death.

[4] Suppiah became a citizen of Singapore one day before competing in the 1971 Southeast Asian Peninsular Games, where he won a gold medal in the 10,000 metres and a silver in the 5000 metres.

[1][2] At the 1973 Southeast Asian Peninsular Games, he won a silver medal in the 5000 metres event.