Khun Pan 3 (Thai: ขุนพันธ์ 3 ตอน วันพิพากษา, lit: "Khun Pan 3: Judgment Day") is a Thai action fantasy thriller film from Sahamongkol Film International that was released on March 1, 2023, directed and written by Kongkiat Khomsiri, who was the director from the first and the second episodes.

It is the third and final installment in the Khun Pan Trilogy, preceded by Khun Pan (2016) and Khun Pan 2 (2018).

Set in 1950, the story is adapted from a real contemporary event when Field Marshal P. Phibunsongkhram, then prime minister had the idea of moving the capital from Bangkok to Phetchabun. Including the assassination of four opposition politicians, the movie has Khun Pan involved as well.

Even though this movie series has completed, in mid-credits scene there are still hints that there might be a spin-off of Captain Tatthep. When the final scene shows him surviving and became a successful rising politician. He was possessed by an evil spirit and changed into an evil person and was signing some documents on the desk.