R11

R11, R-11, Meaning R11 - Rhyll Anthony, R11.ID

Automobiles

 * BMW R 11, a German motorcycle
 * R-11 Refueler a military truck of the United States Air Force
 * Renault 11, a French family car

Vessels

 * HMS R11, a submarine of the Royal Navy
 * HMS Tumult (R11), a destroyer of the Royal Navy
 * INS Vikrant (1961), an aircraft carrier of the Indian Navy decommissioned in 1997
 * INS Vikrant (2013), an aircraft carrier of the Indian Navy commissioned in 2022
 * SPANISH AIRCRAFT CARRIER Príncipe de Asturias
 * USS R-11 (SS-88), a submarine of the United States Navy

Other uses

 * R11 (New York City Subway car)
 * R11 (Rodalies de Catalunya), a regional rail line in Catalonia, Spain
 * Caudron R.11, a French biplane fighter
 * R11: Highly flammable, a risk phrase
 * R-11 regional road (Montenegro)
 * R-11 Zemlya, a Soviet tactical ballistic missile
 * Oppo R11, a smartphone
 * Remington R11 RSASS, an American semi-automatic rifle
 * Small nucleolar RNA R11/Z151
 * Trichlorofluoromethane, a chlorofluorocarbon used as a refrigerant
 * Tumansky R-11, a Soviet turbojet engine
 * Umbundu, a Bantu language of Angola