Effinger is a surname of German origin. Notable people with that name include:
Cecil Effinger (1914–1990), American composer, oboist, and inventor George Alec Effinger (1947–2002), American science fiction author Virgil Effinger (1873–1955), leader of the Black Legion in the United States
Fictional characters Several characters in Gabriele Tergit's 1951 family saga novel Effingers
See also Friedrich Ludwig von Effinger (1795–1867), Swiss politician Effingen, former municipality in Aargau, Switzerland Offingen, municipality in Bavaria, Germany