Siran may refer to:

• Siran, Cantal, a commune in the department of Cantal, France
• Siran, Hérault, a commune in the department of Hérault, France
• Siran, East Azerbaijan, a village in East Azerbaijan Province, Iran
• Siran, Markazi, a village in Markazi Province, Iran
• Siran, Shazand, a village in Markazi Province, Iran
• Siran, West Azerbaijan, a village in West Azerbaijan Province, Iran
• Şiran, a town in northeastern Turkey
• Siran Valley, valley in Khyber Pakhtunkhwa, Pakistan

• Sigiramnus (Siran, Cyran), 7th century Frankish saint

• Siren (disambiguation)