Tetens may refer to:
People
- Alfred Tetens (1835-1903), German explorer
- Axel Tetens (1892–1961), Danish Olympic wrestler
- Johannes Nikolaus Tetens (1736–1807), German-Danish philosopher and scientist
- Otto Tetens (1865–1945), German scientist
- T.H. Tetens (1899-1976), Jewish German journalist
Other uses
- Tetens equation, calculates the saturation vapor pressure of water over liquid and ice