Full details of nominees on the SFWA 1976 Nebula Awards page.
Charles L. Grant. A Crowd of Shadows.
Winner Best Short Story
Thomas F. Monteleone. Breath’s a Ware That Will Not Keep.
Joe Haldeman. Tricentennial.
John Varley. In the Bowl.
Isaac Asimov. The Bicentennial Man.
Winner Best Novelette
James Tiptree, Jr. Houston, Houston, Do You Read?
Winner Best Novella