D79 may refer to:
D. 79, Wind Nonet in E♭ minor by Franz Schubert, Eine kleine Trauermusik (composed in 1813) , River-class torpedo-boat destroyer of the Royal Australian Navy (RAN) , River-class destroyer that served in the Royal Canadian Navy (RCN) from 1931 to 1945 , Battle-class destroyer of the Royal Navy , Bogue-class escort carrier built during World War II for the United States Navy