R34

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
 * HMS Cockade (R34), 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