Terror Firmer is a 1999 American comedy horror film directed by Lloyd Kaufman, written by Douglas Buck, Patrick Cassidy, and Kaufman, and starring Will Keenan, Alyce LaTourelle, and Kaufman. The film was produced by the Troma Entertainment company, known for distributing campy exploitation films.

The film features several direct references to the previous Troma films, such as The Toxic Avenger, and includes famous Troma props, like the 'Penis Monster' (referred to in the film as "Thor, the God of Love") and a severed leg. It was loosely based, in that respect, on Kaufman and James Gunn's book All I Need to Know about Filmmaking I Learned from the Toxic Avenger.