Ryan Petrella, professionally known as Cyran, is an American electronic music producer, DJ, and songwriter.

Other meanings of the name Cyran can refer to:

• Sigiramnus or Cyran, 7th century Frankish saint and abbot
• Jean Duvergier de Hauranne, known as the abbé de Saint-Cyran, 17th century theologian.
• Jacek Cyran, Polish judoka

• Saint-Cyran-du-Jambot, French commune

• The Batman Superman Movie: World's Finest
• The Batman/Superman Movie: World's Finest
• The Batman Who Laughs
• The Baton Rouge Advocate
• The Bat (operetta)
• The Bats (American band)
• The Battalion Drum and Bugle Corps
• The Battalion in the Shadows
• The Battered Wives
• The Battery Atlanta
• The Battery (disambiguation)
• The Battery (New York)
• The Battery (New York City)
• The Battle Against Berlin
• The Battle (Alexander Kluge novel)
• The Battle at Blue Coat's Village
• The Battle at Hackham Heath
• The Battle at Pawnee Chief Blue Coat's Village, 1843
• The Battle Cats
• The Battle Cats POP!
• The Battlefield (1985 TV series)
• The Battlefield (Ghostface Killah song)
• The Battle for Afrin City
• The battle for Aleppo
• The Battle for Blüdhaven