Agapetus
Agapetus (Ancient Greek: Ἀγαπητός, beloved) may refer to:
- Agapetus (caddisfly), a genus of caddisflies
 - Agapetus (deacon) (fl. 500–527), a deacon of the church of Hagia Sophia in Constantinople
 - Agapetus (physician), ancient Greek doctor
 - Pope Agapetus I (died 536)
 - 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