George Miller III (born May 17, 1945) is an American politician who has been a Democratic member of the United States House of Representatives since 1975, representing California's 7th congressional district (map).

The son of State Senator George Miller, Jr., he was born in Richmond, California. He was educated at San Francisco State University and the University of California, Davis law school, after which he was admitted as an attorney and served as legislative assistant to California Senate majority leader George Moscone before entering the House. Since 2007, Miller has served as chairman of the Education and Labor Committee, formerly known as the Education and the Workforce Committee.

In the House, Miller has been a member of the Natural Resources Committee; he was that Committee's chairman from 1991 to 1994. Miller has supported efforts to preserve public lands such as the 1994 California Desert Protection Act, which among other things created Death Valley National Park and Joshua Tree National Park. In addition, Miller was the chief sponsor of the Central Valley Project Improvement Act of 1992, which mandated that the federal government's Bureau of Reclamation manage the Central Valley Project in order to better protect the fish and wildlife populations of California's Bay-Delta region. Miller lost his chairmanship when Republicans won control of Congress in 1994. He stayed as the committee's Ranking Member until 2000, and remains on the committee. Miller is also a member of the Congressional Wildlife Refuge Caucus.