Attack Squadron 15 (VA-15), nicknamed the Valions, was an aviation unit of the United States Navy. It was established as Torpedo Squadron 4 (VT-4) on 10 January 1942, redesignated VA-2A on 15 November 1946, and finally redesignated VA-15 on 2 August 1948. The squadron was disestablished on 1 June 1969, after 27 years of service.