Ejner is a male given name. The following is a list of notable persons with that name:
- Ejner Augsburg (1892 – 1971) Danish modern pentathlete
- Ejner Bech (1912 – 1956) Danish racewalker
- Ejner Federspiel (1896 – 1981) Danish film actor
- Ejner Johansson (1922 – 2001) Danish art historian, writer, and director
- Ejner Larsen (1917-1987) Danish furniture designer