Alirio Díaz (born November 12, 1923) is a Venezuelan classical guitarist.

The eighth of eleven children, Díaz was born in Caserio La Candelaria, a small village near Carora in western Venezuela. From childhood he showed a great interest in music. His uncle was his first teacher guitar. At age 16 he ran away from home to Carora, where he sought better schooling. He later went to Trujillo, in the Venezuelan Andes, and studied saxophone and clarinet under Laudelino Mejías while working as a typesetter in a newspaper. He also studied English and typewriting before going to Caracas in 1945 to study the guitar at the Escuela Superior de Musica José Ángel Lamas under Raul Borges.