GA, Ga, or ga may refer to:
Gastroenteritis, also known as infectious diarrhea, is inflammation of the gastrointestinal tract—the stomach and small intestine.
Game of Thrones is an American fantasy drama television series created by David Benioff and D. B. Weiss for HBO.
Galileo Galilei ( GAL-il-AY-oh, also US: -EE-oh, Italian: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath, from Pisa.
Gabapentin, sold under the brand name Neurontin among others, is an anticonvulsant medication used to treat partial seizures, neuropathic pain, hot flashes, and restless legs syndrome.
The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.
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), from 17 February 1915 to 9 January 1916. The Entente powers, Britain, France and the Russian Empire, sought to weaken the Ottoman Empire, one of the Central Powers, by taking control of the straits that provided a supply route to Russia.
Paul Francis Gadd (born 8 May 1944), known professionally as Gary Glitter, is an English glam rock singer who achieved success in the 1970s and 1980s.