Criminally Insane 2 (also known as Crazy Fat Ethel II) is a 1987 horror film written and directed by Nick Millard. It is the sequel to the 1975 film Criminally Insane.

In the film, a female serial killer is released from an insane asylum due to budget cuts. She is transferred to a halfway house, where her delusions resurface. She kills an abusive orderly, and then goes on a killing spree.

This sequel was shot on video and is 50% clips from its predecessor (presented as flashbacks). The film contains roughly just 30 minutes of new content. The new content has no soundtrack (the only music in the film is during the reused flashback footage), and the video quality is markedly poor, a constant whirring of the machinery being audible.