The term/code Z4 has several uses, including the following: Z4 (computer), the first computer in the world to actually be sold in 1950 Z-4 plan, a plan that was meant to stop the Croatian War of Independence in 1994 BMW Z4, a BMW sports car model Hafdasa Z-4, an Argentine submachine gun German destroyer Z4 Richard Beitzen Z-4, U.S. Army designation for Hybrid Air Vehicles HAV 304/Airlander 10 Moto Z4, a smartphone LNER Class Z4, a class of British steam locomotives Sony Xperia Z4, a smartphone the IATA airline designator code for Zoom Airlines See also 4Z (disambiguation)