GA, Ga, or ga may refer to:
Game of Thrones is an American fantasy drama television series created by David Benioff and D. B. Weiss.
Galileo Galilei (Italian: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian polymath.
Gabapentin (sold under the brand name Neurontin, among others) is a medication which is used to treat partial seizures, neuropathic pain, hot flashes, and restless legs syndrome.
Gastroenteritis, also known as infectious diarrhea, is inflammation of the gastrointestinal tract -- the stomach and small intestine.
The Gallipoli Campaign, also known as the Dardanelles Campaign, the Battle of Gallipoli, or the Battle of Çanakkale (Turkish: Çanakkale Savaşı), was a campaign of the First World War that took place on the Gallipoli peninsula (Gelibolu in modern Turkey) in the Ottoman Empire between 17 February 1915 and 9 January 1916. The peninsula forms the northern bank of the Dardanelles, a strait that provided a sea route to the Russian Empire, one of the Allied powers during the war.