Dolinar is a Slovenian surname. Notable people with the surname include:
- Aleš Dolinar (born 1979), Slovenian motorcycle speedway rider
- Elvira Dolinar (1870–1961), Slovenian writer, feminist and teacher
- Ivan Dolinar (1840–1886), Slovenian politician, teacher and journalist
- Žarko Dolinar (1920–2003), Croatian biologist and table tennis player