Cantus may refer to:

• Cantus, an activity organised by Flemish and Dutch and Baltic student organisations and fraternities
• Cantus (database), a database for Latin ecclesiastical chant
• Cantus (vocal ensemble), a nine-member a cappella ensemble in Minnesota
• Cantus firmus, a pre-existing melody forming the basis of a polyphonic composition
• Cantus Records of Madrid, Spain
• Cantus the Minstrel, a character from Fraggle Rock
• Cantus may refer to the uppermost voice in medieval music manuscripts
• Cantus Verkehrsgesellschaft, a railway company in Germany
• Cantus (software)
• Cantus in Memoriam Benjamin Britten, a composition by Arvo Pärt
• Cantus (Norwegian female choir)
• Cantus, a song by 'Faith and the Muse' from their 1996 album Annwyn, Beneath the Waves

• Henry A. Wiley
• Henry Aydelotte Houston
• Henry Aylmer
• Henry Babcock Veatch
• Henry Babington-Smith
• Henry Babington Smith
• Henry Babson
• Henry Backus
• Henry Bacon (basketball)
• Henry Bacon (New York politician)
• Henry Bacon (U.S. politician)
• Henry Badger
• Henry Baesler
• Henry Bagenal
• Henry Bagthorpe
• Henry Bain sauce
• Henry Baird
• Henry Baker
• Henry Baker (disambiguation)
• Henry Baldwin (disambiguation)
• Henry Baley
• Henry Ball
• Henry Bamford Parkes
• Henry Bannarn
• Henry Banning