Corycus may refer to:

• Corycus (alga), a brown alga genus in the family Chordariaceae
• Hayton of Corycus, medieval Armenian historian

places

• Corycus, a city of Cilicia Tracheia
• Corycus (Crete), a town of ancient Crete, Greece
• Corycus (Ionia), a town of ancient Ionia
• Corycus (Lycia), a city in Lycia
• Corycus (mountain), a mountain in Lydia
• Corycus (Pamphylia), a city in Pamphylia
• Gramvousa island off Crete, anciently known as Corycus
• Gramvousa Peninsula on Crete, anciently known as Corycus