Aircraft
- AEG G.IV, a German World War I heavy bomber
- Caudron G.4, a 1915 French biplane
- Friedrichshafen G.IV, a 1918 German medium bomber
- Gotha G.IV, a 1916 German heavy bomber
- Gulfstream IV, a family of private jet aircraft
- Soko G-4 Super Galeb, a jet trainer/light attack jet of Yugoslav/Serbian origin
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