2331–2415), known formally as Somdet Phra Buddhacarya (To Brahmaramsi) (Thai: สมเด็จพระพุฒาจารย์ (โต พฺรหฺมรํสี); RTGS: Somdet Phra Phutthachan (To Phrommarangsi)), was one of the most famous Buddhist monks during Thailand's Rattanakosin period and continues to be the most widely known saintly monk in Thailand.

[3] Somdet To was born in Phra Nakhon Si Ayutthaya Province, the illegitimate son of King Rama II.

[5] He was noted for the skill of his preaching and his use of Thai poetry to reflect the beauty of Buddhism, and for making amulets called Somdej.

He also appears in many versions of the story of the ghost Mae Nak Phra Khanong, and he is said to be the one to finally subdue her.

[6] Wat Luang Phor Toh in Sikhio Town features a golden statue representing Somdet To.