Ivan Lawrence Blieden, known professionally as Larry Blyden, was an American actor, stage producer and director, and game show host. He made his Broadway stage debut in 1948 and went on to appear in numerous productions on and off Broadway. In 1972, he won the Tony Award for Best Featured Actor in a Musical for his performance in the revival of A Funny Thing Happened on the Way to the Forum which he also produced. That same year, he became the host of the syndicated revival version of What's My Line?

This is a list of the winners and nominations of Tony Award for the Best Performance by a Featured Actor in a Musical. The award has been given since 1947, but the nominees who did not win have only been publicly announced since 1956. Before 1976, the award was called Best Performance by an Actor in a Featured or Supporting Role in a Musical.