GR may refer to:
The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the United States.
Grey's Anatomy is an American medical drama television series that premiered on March 27, 2005, on the American Broadcasting Company (ABC) as a mid-season replacement.
The Greek alphabet has been used to write the Greek language since the late ninth or early eighth century BC.
Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of 209,331 km2 (80,823 sq mi), it is the largest of the British Isles, the largest European island, and the ninth-largest island in the world.
Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced in a period of time, often annually or quarterly.
Greek mythology is the body of myths originally told by the ancient Greeks. These stories concern the origin and the nature of the world, the lives and activities of deities, heroes, and mythological creatures, and the origins and significance of the ancient Greeks' own cult and ritual practices.
A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect.