Supergalaxy, super-galaxy, or super galaxy may refer to:

Astronomy a term for the Virgo Cluster of galaxies and its outlying members a reference to the organization of the supergalactic coordinates system Brightest cluster galaxy a giant galaxy (i.e. giant elliptical, gE, cD, D), see galaxy a system of a central galaxy, and satellite galaxies

Games and storylines Super Galaxy Invader and Super Galaxy Invasion, a handheld videogame by Bandai Super Galaxy, a handheld clone videogame of Asteroids (video game) Super Galaxy, an Ultraman storyline Super Galaxy, a mecha (Mega) from Power Rangers and Sentai Rangers Legend of the Super Galaxy, part of Cyborg 009

Other uses C-5M Super Galaxy, a military cargo transport aircraft Super Galaxy, a bicycle manufactured by Dawes Cycles