Bucolus is the name of four men in Greek mythology and of one early Christian saint:
- Bucolus, father of Sphelus, and grandfather of Iasus, captain of the Athenians at the Trojan War. Iasus was killed by Aeneas 
- Bucolus, son of Hippocoon, king of Sparta.
- Bucolus, son of Heracles and Marse, daughter of Thespius and Megamede.
- Bucolus (meaning "neat herd") was a nickname of Daphnis.
- Saint Bucolus, one of the first Christian bishops of ancient Smyrna, disciple of St John the Theologian.