Michael Stewart (August 1, 1924 – September 20, 1987) was an American playwright and librettist.
Born Michael Stuart Rubin in Manhattan, Stewart attended Queens College, and is a graduate of Yale School of Drama with a Master of Fine Arts from 1953.
His early work was writing sketches for the revues The Shoestring Revue (1955), The Littlest Revue (1957), and Shoestring '57. He then joined the staff writers of Sid Caesar's television program, Caesar's Hour.