Langfeldt is a Norwegian surname. Notable people with the surname include:
Einar Langfeldt (1884–1966), Norwegian physician Gabriel Langfeldt (1895–1983), Norwegian psychiatrist Knut Langfeldt (1925–2018), Norwegian political scientist Morgan Engebretsen Langfeldt (born 1968), Norwegian politician Thore Langfeldt (born 1943), Norwegian psychologist and sexologist
See also Langfeld