| Date | Title | Role | Theatre | Notes |
| October 26, 1932 – 1933 | Liliom | Stretcher bearer (uncredited) | Civic Repertory Theatre, New York City | Directed by Eva Le Gallienne |
| December 12, 1932 – 1933 | Alice in Wonderland | 5 of Clubs (as Mr. Lloyd) | Civic Repertory Theatre, New York City | Directed by Eva Le Gallienne |
| 1933 | A Secret Life, The Children's Tragedy, Naked, Fear, The Armored Train, The Call of Life, The Sowers | Various | The New School for Social Research, New York City | Apprentice Theatre, executive director May Sarton |
| 1934 | A Bride for the Unicorn | Jay | Harvard Dramatic Club | Directed by Joseph Losey |
| 1935 | Dr. Knock | Knock | Peabody Playhouse, Boston | Associated Actors (May Sarton) |
| 1935 | Gallery Gods | | Peabody Playhouse, Boston | Associated Actors (May Sarton) |
| 1935 | Gods of the Lightning | Macready | Peabody Playhouse, Boston | Associated Actors (May Sarton); directed by Joseph Losey |
| February 3 – March 1935 | Noah | Japhet | Longacre Theatre, New York City | Broadway debut |
| 1935 | School for Wives | | Peterborough Players, Peterborough, New Hampshire | Summer stock |
| 1936 | The Crime | | Civic Repertory Theatre, New York City | Two nights, presented The Theatre Union; directed by Elia Kazan |
| March 14–May 2, 1936 | Triple-A Plowed Under | Leads in vaudeville sketches | Biltmore Theatre, New York City | Living Newspaper, Federal Theatre Project; directed by Joseph Losey |
| July 24–October 20, 1936 | Injunction Granted | Clown | Biltmore Theatre, New York City | Living Newspaper, Federal Theatre Project; directed by Joseph Losey |
| February 22–July 10, 1937 | Power | Angus J. Buttoncooper, the Consumer | Ritz Theatre, New York City | Living Newspaper, Federal Theatre Project; directed by Brett Warren |
| November 11, 1937 – May 28, 1938 | Caesar | Cinna the Poet | Mercury Theatre and National Theatre, New York City | Debut of the Mercury Theatre; directed by Orson Welles |
| January 1 – April 28, 1938 | The Shoemaker's Holiday | Roger, commonly called Hodge | Mercury Theatre and National Theatre, New York City | In repertory with Caesar; directed by Orson Welles |
| December 29, 1938 – January 1939 | Everywhere I Roam | Johnny Appleseed | National Theatre, New York City | Directed by Marc ConnellyLloyd named to the critics' Ten Best Performers list |
| April 1939 | Quiet City | David | Belasco Theatre, New York City | Three Sunday nights; directed by Elia Kazan for The Group Theatre |
| April 12 – May 11, 1940 | Medicine Show | | New Yorker Theatre, New York City | Commercially produced Living Newspaper on health in the U.S. |
| 1940 | Pigeons and People | | Dock Street Theatre, Charleston, South Carolina | |
| February 5–22, 1941 | Liberty Jones | | Shubert Theatre, New York City | |
| September 3–27, 1941 | Village Green | | Henry Miller Theatre, New York City | |
| February 4–13, 1943 | Ask My Friend Sandy | Sandy | Biltmore Theatre, New York City | |
| December 25, 1950 – February 3, 1951 | King Lear | Fool | National Theatre, New York City | Directed by John Houseman |
| 1954 | Madame Will You Walk | Dockweil | Phoenix Theatre, New York City | |
| 1955 | Don Juan in Hell | Devil | La Jolla Playhouse, San Diego, California | |
| 1956 | Measure for Measure | Lucio | American Shakespeare Festival, Stratford, ConnecticutPhoenix Theatre, New York City | Directed by John Houseman and Jack Landau |
| 1974 | Major Barbara | Undershaft | Mark Taper Forum, Los Angeles, California | |
| July 1–12, 1992 | The Will and Bart Show | Will | Williamstown Theatre Festival, Williamstown, Massachusetts | Written by Jim Lehrer |
| December 5, 2010 | An Evening with Norman Lloyd | Himself | Colony Theatre, Burbank, California | |