Dacier is a surname. Notable people with the surname include:
- André Dacier (1651âÂÂ1722), French classical scholar and editor of texts
- Anne Dacier (1651âÂÂ1720), French scholar, translator, commentator, editor of the classics, and wife of the above
- Bon-Joseph Dacier (1742âÂÂ1833), French historian, philologist, and translator of ancient Greek