Kallen is both a surname and a given name. Notable people with the name include:
- Horace Kallen (1882–1974), American philosopher
- Jackie Kallen (born 1946), American boxing manager
- Kitty Kallen (1921–2016), American singer
- Arvid Emanuel Kallen (1895–1969), Swedish American businessman
- Kallen Esperian (born 1961), American singer
Fictional characters:
- Kallen Stadtfeld, character in the anime series Code Geass
See also
- Callen (disambiguation)
- Gunnar Källén (1926–1968), Swedish Theoretical physicist and a professor at Lund University
- Kalen
- Kellan
- Kylen
- Van der Kellen
- Wilberd van der Kallen (born 1947), Dutch mathematician
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