R34 may refer to: R34 (New York City Subway car) R34 (South Africa) HM Airship R.34, a rigid airship of the Royal Air Force , a destroyer of the Royal Navy Nissan Skyline (R34), a mid-size car Nissan Skyline GT-R (R34), a sports car R34: Causes burns, a risk phrase Renard R.34, a Belgian trainer biplane Rule 34, a statement that pornography is concerned in every conceivable topic