Gitmo is the Guantanamo Bay Naval Base, a US naval base.
Gitmo may also refer to:
Guantánamo Bay, a bay at the southeastern end of Cuba Guantanamo Bay detention camp, in the Guantánamo Bay Naval Base Gitmo: The New Rules of War, a documentary film about the detention camp
See also Good Morning Gitmo, a one-act dark comedy about the detention camp Guantanamo (disambiguation)