Cotys may refer to:

• Cotys I (disambiguation), multiple people
• Cotys II (disambiguation), multiple people
• Cotys III (disambiguation), multiple people
• Cotys IV, Odrysian king of Thrace
• Cotys V, Odrysian king of Thrace
• Cotys VI, King of Thrace
• Cotys VII, King of Thrace
• Cotys VIII, King of Thrace
• Cotys IX, son to Cotys VIII and Roman Client King of Lesser Armenia
• Tiberius Julius Cotys I (fl. 1st century), second grandson to Cotys VIII and King of the Bosporan Kingdom
• Tiberius Julius Cotys II (fl. 2nd century), King of the Bosporan Kingdom
• Tiberius Julius Cotys III (died 235), King of the Bosporan Kingdom

• Cotys, mythical king of Lydia in Greek mythology.

• Cotys (insect), a genus of insect in the family Tetrigidae

• All pages with titles beginning with Cotys
• All pages with titles containing Cotys
• Kotys
• Kotys (surname)
• Coty (disambiguation)