R33

R33 may refer to:

• R-33 (missile), a Soviet air-to-air missile
• R33 (South Africa), a road
• R33 (New York City Subway car)
• HM Airship R.33, of the Royal Air Force
• , a destroyer of the Royal Navy
• Template:INS, an aircraft carrier of the Indian navy
• Nissan Skyline (R33), a mid-size car
• Nissan Skyline GT-R (R33), a sports car
• R33: Danger of cumulative effects, a risk phrase
• Renard R.33, a Belgian trainer
• Urinary retention
• Wakonda Beach State Airport in Lincoln County, Oregon