The Astronomical Society of Greenbelt (formerly the Greenbelt Astronomy Club) is an organization made up of people in and around Greenbelt, MD who are interested in astronomy. The group's objective is to educate people about the fascinating science and hobby of astronomy. Persons of all knowledge and skill levels are welcome to attend activities and join.

Regular meetings are (usually) held on the last non-holiday Thursday of each month at the H.B. Owens Science Center. Star Parties are held on selected Saturdays - and other days for notable events - at the James Wolfe Field on Northway, Extended in Greenbelt.