glbtq.com (also known as the glbtq Encyclopedia Project) was an online encyclopedia of gay, lesbian, bisexual, transgender, and queer (GLBTQ) culture. Launched in 2003, it was edited by Claude J. Summers, emeritus professor at the University of Michigan–Dearborn, and published by . It was warmly received by critics, who praised its columns as well-researched. The encyclopedia closed in 2015; its content is accessible via an online archive.