Wittig is a surname, and may refer to:
- Burghardt Wittig, German biochemist
- Curt Wittig, American chemist
- David Wittig, American executive
- Edward Wittig (1879–1941), Polish sculptor
- Ferdinand Wittig (1851-1909), American politician
- Georg Wittig (1897–1987), German chemist
- Iris Wittig (1928-1978), German military pilot
- Johnnie Wittig (1914–1999), former Major League pitcher
- Martin C. Wittig, German CEO
- Michael Wittig, American musician
- Monique Wittig (1935–2003), French author and feminist theorist
- Peter Wittig, German diplomat
- Rüdiger Wittig, German professor of geobotany and ecology
- Sigmar Wittig, German Chair of the European Space Agency
- Susan Wittig Albert, American mystery writer
