Kaeo Pongprayoon (Thai: แก้ว พงษ์ประยูร, RTGS: Kaeo Phongprayun, pronounced [kɛ̂ːw pʰōŋ.prā.jūːn]; born 28 March 1980 in Kamphaeng Phet) is a Thai amateur boxer who won a silver medal at the 2012 Summer Olympics.

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.