Dager is a surname and a given name. Notable people with the name include:
Charles Dager (1927–2016), Republican member of the Pennsylvania House of Representatives Dad Dáger (born 1967), Venezuelan actress Elwood Dager Cromwell (John Cromwell) (1886–1979), American film and stage director and actor Holmes E. Dager (1893–1973), career officer in the United States Army Peter "ppd" Dager, aka ppd, American professional Dota 2 player
See also Dori Dager, village in Jammu and Kashmir, India Dager Ort lighthouse, symbol and tourist site on the Estonian island of Hiiumaa Loden Dager, menswear collective based in New York City