The St. George Astronomy Group (SGAG) is a 501(c)(3) nonprofit public charity 509(a)2 corporation of amateur astronomers in St. George,  and other nearby communities in southwest Utah.

The group was formed to (a) exchange ideas and foster fellowship among people with an interest in astronomy, (b) to host public star parties, and (c) to promote proper lighting and dark skies over southwest Utah.

Membership is open to anyone who wishes to actively participate.