Blondel may refer to:
- Apostilb, an old unit of luminance
People:
- Jonathan Blondel (1984-), Belgian footballer
- Vincent Blondel (1965-), Belgian professor of applied mathematics
- André Blondel (1863–1938), French scientist and engineer
- Maurice Blondel (1861-1941), French Catholic philosopher
- Jacques-François Blondel (1705-1774), French architect
- François Blondel (1618-1686), French mathematician and engineer, author of Cours d'Architecture
- David Blondel (1591-1655), French Protestant clergyman and scholar
- Blondel de Nesle (c. 1155 – 1202), French trouvère, or poet
In music:
- Amazing Blondel, an English progressive folk band
- Blondel (musical), a rock opera