(Ancient Greek: Πόλυβος) was the 20th king of Sicyon who reigned for 40 years.
He had a daughter Lysimache or Lysianassa whom he gave in marriage to Talaus of Argos, son of King Bias.
[2] Some authors considered the fisherman Glaucus to be Polybus's son by Euboea, daughter of Larymnus.
[3] Polybus inherited the throne of Sicyon from his grandfather and during his reign, his grandson Adrastus came to him fleeing from Argos.
Afterwards, at the death of Polybus, Adrastus succeeded his grandfather as the new ruler of the city.