VA-21A was an Attack Squadron of the United States Navy during World War II. It was established as Bombing Squadron VB-98 on 28 August 1944 and redesignated as VA-21A on 15 November 1946. The squadron was disestablished on 5 August 1947.
The squadron's mission was to provide a pool of trained dive-bomber pilots and aircrewmen for assignment as replacements to squadrons operating in the Pacific. The training practiced in the squadron included carrier landing qualifications, gunnery, bombing and night flying.
The squadron was assigned the following aircraft in the months shown: