VAST is an American alternative rock band based in Seattle, United States. The acronym VAST stands for Visual Audio Sensory Theater and is the main creation of singer/songwriter and multi-instrumentalist Jon Crosby. The band is signed to 2blossoms, an independent record company created by Crosby.

VAST's sound is identifiable as ambient electro-rock with considerable industrial and acoustic influences, usually made with Crosby's traditional acoustic guitar, electronic instruments and processing, drum-driven tracks, and heavy bass. Vocally similarities range from classic rock to post-grunge. In recent years, however, VAST's sound has been more identifiable with acoustic rock in releases such as April and Me and You. The band's latest release is 2018's She Is Murder EP