Gad or GAD may refer to:
Government and politics
* General Administration Department, of Burma's Ministry of Home Affairs
* Government Actuary's Department, of the Government of the United Kingdom
* Grand Alliance for Democracy, a Philippine political coalition
* People's Liberation Army General Armaments Department
People
* Gad (name), a list of people with the surname, given name or nickname
Places
* Gad, West Virginia, flooded in the construction of Summersville Lake, United States
* Gad, Wisconsin, an unincorporated community, United States
* Gad Cliff, Dorset, England
* Gad River, Maharashtra, India
* Gad, a village in Ghilad Commune, Timiș County, Romania
Religion
* Gad (son of Jacob), the founder of the tribe of Gad and seventh son of Jacob
** Tribe of Gad, a tribe of the ancient Kingdom of Israel
* Gad (prophet), King David's seer or prophet
* Gad (deity), a pan-Semitic deity worshipped during the Babylonian captivity
Science, medicine, and mathematics
* Generali ...