Grace Quigley (also titled The Ultimate Solution of Grace Quigley) is a 1985 American black comedy film starring Katharine Hepburn and Nick Nolte, produced by Yoram Globus and Menahem Golan and directed by Anthony Harvey. The film is noted for being Hepburn's last leading role in a film for the big screen, as well as the last appearance, stage or otherwise, of Walter Abel.

The film is primarily set in New York City. An elderly widow is suicidal, but her suicide attempts have repeatedly failed. So she hires a contract killer to end her life, and also asks him to kill other lonely old people. She views these acts as mercy killings, not murders.