The 34th Annual Tony Awards was broadcast by CBS television on June 8, 1980, from the Mark Hellinger Theatre. The hosts were Mary Tyler Moore and Jason Robards. The theme was "understudies"; each of the hosts and presenters had been understudies and offered anecdotes of that beginning.

The ceremony

Presenters: Eve Arden, Carol Channing, Hume Cronyn, Faye Dunaway, Mia Farrow, James Earl Jones, Elia Kazan, Richard Kiley, James MacArthur, Nancy Marchand, Dudley Moore, Anthony Perkins, Gilda Radner, Lynn Redgrave, Tony Roberts, Jessica Tandy, Cicely Tyson, Dick Van Dyke. Musicals represented:

Winners and nominees

Winners are in bold

Special awards

Multiple nominations and awards

These productions had multiple nominations: The following productions received multiple awards.