Wegener may refer to:

Astronomy

• 29227 Wegener, a main-belt asteroid
• Wegener (lunar crater)
• Wegener (Martian crater)

Places

• Wegener Range, an Antarctic mountain range
• Mount Wegener, an Antarctic mountain in the Read Mountains in the Shackleton Range
• Wegener Canyon, an undersea canyon
• Wegener Halvo Formation, a geologic formation in Greenland

Businesses

• Wegener (company), a Dutch media conglomerate
• Alfred Wegener Institute for Polar and Marine Research

Medicine

• Wegener's granulomatosis, now known as granulomatosis with polyangiitis

People

• Alfred Wegener (1880–1930), German geologist who originated the theory of continental drift
• Kapitänleutnant Bernhard Wegener, commander of German submarine U-27, killed in one of the two Baralong incidents in 1915
• Bertha Frensel Wegener (1874–1953), Dutch composer and music educator
• Bobby Wegener, American lawyer and Oklahoma's Secretary of Energy from 2008-2011
• Manuela (singer) (1943–2001), German singer Doris Inge Wegener
• Einar Mogens Wegener (1882–1931), birth name of transsexual pioneer Lili Elbe
• Emmy Wegener (1901–1973), Dutch violinist, pianist, poet and composer
• Frederico or Federico Wegener, aliases of Eduard Roschmann (1908–1977), Nazi SS officer known as the "Butcher of Riga"
• Friedrich Wegener (1907–1990), German pathologist
• Gerda Wegener (1886–1940), Danish illustrator
• Ingo Wegener (1950–2008), German computer scientist
• Kurt Wegener (1878–1964), German polar explorer and meteorologist, brother of Alfred
• Mike Wegener (born 1946), American Major League Baseball pitcher
• Myrton O. Wegener (1917–1991), American farmer, businessman, and politician
• Otto Wegener (1849–1924), French portrait photographer
• Otto Wegener (1881–1938), Danish sports shooter
• Paul Wegener (1874–1948), German actor and film director
• Paul Wegener (Nazi) (1908–1993), German Nazi Party official
• Stephen T. Wegener (born 1952), American psychologist
• Ulrich Wegener (1929–2017), German police officer
• Wilhelm Wegener (1895–1944), German general during World War II
• Wolfgang Wegener (1875–1956), German admiral and naval historian