Gade is a famous surname. Notable people with the surname include:
- Alexandra Gade (born 1974), nuclear physicist
- Fredrik Georg Gade (businessman) (1830-1905), Norwegian businessman
- Fredrik Georg Gade (1855-1933), Norwegian physician
- Fredrik Herman Gade (1871-1943), Norwegian diplomat
- Herman Gerhard Gade (1870-1953), Norwegian physician
- John Allyne Gade (1875-1955), American architect, naval officer, diplomat and author
- Ludvig Gade (1823-1897), Danish dancer and mime
- Niels Wilhelm Gade (1817-1890), Danish composer and musician
- Jacob Gade (1897-1963), Danish violinist and composer of Tango Jalousie
- Peter Gade (born 1976), Danish badminton player
- Per Gade (born 1977), Danish footballer
- Mary Gade, director of the Illinois Environmental Protection Agency from 1991 to 1999, and plaintiff in Gade v. National Solid Wastes Mgt. Ass'n