Poh Seng Song (born 30 January 1983) is an athlete from Singapore who specialises in the 100 metres sprint and 4 x 100 metres relay.
Participating in the 2004 Summer Olympics, he achieved seventh place in his 100 metres heat, thus missing out on a placing in Round 2 of the event.
Seng Song received his education in Anglo-Chinese School. As of December 2005, he is an undergraduate at the Singapore Management University.