R34 may refer to:Nissan Skyline (R34), a mid-size car Nissan Skyline GT-R (R34), a sports car R34 R34 HM Airship R.34, a rigid airship of the Royal Air Force HMS Cockade (R34), a destroyer of the Royal Navy R34: Causes burns, a risk phrase Renard R.34, a Belgian trainer biplane Rule 34, a statement that pornography is concerned in every single character or someone