Campanus
Campanus can refer to:
- Giovanni Antonio Campani called Campanus (1427–1477), Italian humanist
 - Campanus of Novara (1220–1296), Italian astrologer, astronomer, and mathematician; also:
- Campanus (crater), a lunar crater named for him
 - the astrological house system named after him; see House (astrology)#Campanus
 
 - Johannes Vodnianus Campanus (1572–1622), Czech humanist, composer, pedagogue, poet, and dramatist
 - Johann Campanus (fl. 1530) Belgian Anabaptist religious reformer
 - Campania, a region of Italy
 
See also
- John Campanius (1601–1683), Swedish Lutheran clergyman