A collegium (plural collegia) may refer to:

collegium (ancient Rome), a term applied to any association with a legal personality in ancient Rome

College of Pontiffs, the highest-ranking collection of priests of the state religion

a Latinized form of the Ancient Greek term hetaireia

Collegium Musicum, any of the university-oriented music societies of Reformation-era Germany and Switzerland

Collegium (ministry), an executive body of the central government in Russia

Collegium (school), a French form of schooling that is both a secondary school and a college

An outdated spelling of kollegium in Scandinavia

Hassagers Kollegium, a dormitory at Frederiksberg Bredegade, Frederiksberg, Denmark

Borchs Kollegium, a dormitory on Store Kannikestræde, Copenhagen, Denmark

An alternative term for some meanings of "College" (disambiguation)