Jom kha mung wej) is a 2005 Thai action thriller film directed by Piyapan Choopetch and starring Chatchai Plengpanich and Akara Amarttayakul.

Itti (Chatchai Plengpanich) is a former police officer, now convicted criminal, and endowed with powerful black magic abilities that make him a feared prisoner.

He is moved to solitary confinement in a specially constructed cell, but with his mind-reading abilities, is able to detect a weakness in the one jailor who brings him food.

Produced by RS Film, Necromancer was released in Thai cinemas on March 10, 2005.

The film has been released on Region 3 DVD, with English subtitles, and was marketed in English-speaking territories with the tagline: "Someone's out to hex you."