Deborah Rush (born April 10, 1954) is an American actress. She has worked in television, film and on Broadway. In 1984, she was nominated for a Tony Award for Best Performance by a Featured Actress in a Play for Michael Frayn's comedy Noises Off. She also acted in Stephen Adly Guirgis' The Last Days of Judas Iscariot. In 2003 she acted in the comedy film American Wedding, as Mary Flaherty, Michelle Flaherty's mom. In December 2008, she joined the cast of the Broadway revival of Blithe Spirit.