Wegener may refer to:
- Alfred Wegener (1880–1930), German geologist and meteorologist
- Alfred Wegener Institute for Polar and Marine Research
- Wegener Canyon, undersea canyon
- Mount Wegener, Antarctic mountain in the Read Mountains in the Shackleton Range
- Wegener Range, Antarctic mountain range
- Bertha Frensel Wegener (1874–1953), Dutch composer and music educator
- Bobby Wegener Oklahoma's Secretary of Energy from 2008-2011,
- Einar Mogens Wegener (1882–1931), birth name of transsexual pioneer Lili Elbe
- Emmy Wegener (1901–1973), Dutch violinist, pianist, poet and composer,
- Friedrich Wegener (1907–1990), German pathologist
- The disease Wegener's granulomatosis
- Gerda Wegener (1886–1940), Danish illustrator
- Ingo Wegener (1950–2008), German computer scientist
- Mike Wegener (born 1946), Major League Baseball pitcher
- Paul Wegener (1874–1948), German actor and film director
- Paul Wegener (Gauleiter) (1908–1993), German Nazi Party official
- Stephen T. Wegener (born 1952), American psychologist
- Ulrich Wegener (born 1929), German police officer
- Wilhelm Wegener (1895–1944), German general of infantry during World War II
- Wolfgang Wegener (1875–1956), German admiral and naval historian