Si Maha Phot (Thai: ศรีมหาโพธิ, pronounced [sǐː mā.hǎː pʰôːt]) is a district (amphoe) in the southern part of Prachinburi province, eastern Thailand.

Neighbouring districts are (from the west clockwise): Si Mahosot, Mueang Prachinburi, Prachantakham, Kabin Buri of Prachinburi Province; Phanom Sarakham and Sanam Chai Khet of Chachoengsao province.

Tambon Hua Wa in the district is the site of Rojana Industrial Park.

[1] Among other tenants of the park, Honda Automobile (Thailand) has established a 17.2 billion baht plant there to manufacture sub-compact vehicles.

There are two townships (thesaban tambons): Si Maha Phot covers parts of tambons Si Maha Phot and Nong Phrong, and Krok Sombun covers parts of Krok Sombun.