The widow of comedian Sam Kinison is suing her former brother-in-law for allegedly cheating her out of her hubby’s estate.

Malika Borghese had been married to the preacher turned foul-mouthed comic for only five days when he died in a car crash in 1992.

A benefit organized by fellow comedian Robin Williams helped bail out Kinison’s debt-ridden estate.

Borghese filed the lawsuit in Los Angeles, claiming William Kinison, acting as his brother’s business manager, drafted the screaming comic’s will and then forged Sam’s signature.

The lion’s share of the estate went to him.