Agapetus (, beloved), also spelled Agapetos or Agapitus, may refer to:
Agapetus (caddisfly), a genus of caddisflies List of Agapetus species Agapitus of Palestrina (died 274), Christian martyr Agapetus (physician), ancient Greek doctor Agapitus (consul 517) Pope Agapetus I (died 536) Agapetus (deacon) (), a deacon of the church of Hagia Sophia in Constantinople Pope Agapetus II (died 955) Agapetus of the Kiev Caves (died 1095), saint of the Eastern Orthodox Church John IX Agapetus (died 1134), Patriarch of Constantinople Agapetus, pen name of Yrjö Soini (1896–1975), Finnish journalist, novelist and playwright
See also Saint Agapitus (disambiguation)