Efron is an Ashkenazi Jewish surname. It is taken from the Biblical place name, עפרוניים Efron, and is also the Hebrew word for the bird lark. It is the surname of:
- Bradley Efron (born 1938), American statistician
- Edith Efron (1922-2001), American libertarian
- Inés Efron (born 1985), Argentine actres
- Marshall Efron (born 1938), American actor
- Zac Efron (born 1987), American actor and singers
Efron may also refer to:
- Efron's dice, a set of four nontransitive dice invented by Bradley Efron
- Brockhaus and Efron Encyclopedic Dictionary
See also: Ephron.