R38 (disambiguation)

R38 is a class of British airships, of which only one was completed.

R38 may also refer to:
 * R-38 (missile), a Soviet prototype air-to-air missile
 * R38 (New York City Subway car)
 * R38 (South Africa), a road
 * HMS R38, a submarine of the Royal Navy
 * HMS Victorious (R38), an aircraft carrier of the Royal Navy
 * R38: Irritating to skin, a risk phrase
 * Renard R.38, a Belgian aircraft
 * Small nucleolar RNA R38
 * Tachikawa R-38, a Japanese training aircraft
 * R38, a car design of London Underground R Stock trains