Mrs. Pollifax–Spy is a 1971 American comedy film directed by Leslie H. Martinson. It starred Rosalind Russell as well as Darren McGavin and Nehemiah Persoff, and was released by United Artists. Russell herself, who was credited using the pen name "C. A. McKnight," a pen name she had drawn from the maiden name of her own mother, adapted the novel The Unexpected Mrs. Pollifax, which had been written by Dorothy Gilman. The film would be Russell's last big-screen role.