Kaeo Pongprayoon (, , ; born 28 March 1980 in Kamphaeng Phet) is a Thai amateur boxer who won a silver medal at the 2012 Summer Olympics.
Pongprayoon won the 2009 Asian Amateur Boxing Championships and the 2009 Southeast Asian Games and 2011 at light flyweight.
At the 2009 World Amateur Boxing Championships he lost his third fight to José Kelvin de la Nieve.
At the 2011 World Amateur Boxing Championships he beat two opponents, then lost 8:14 to Zou Shiming.
At the 2012 Summer Olympics (results) he won his first fight against Algerian Mohamed Flissi 19:11, then defeated Ecuador's Carlos Quipo and Bulgarian Aleksandar Aleksandrov. He reached the final by edging out Russian David Ayrapetyan 13:12. He controversially lost the final to Zou Shiming 10:13.