G36 may refer to:
Heckler & Koch G36, a German 5.56mm assault rifle designed in the early 1990s
Glock 36, a variant of Austrian Glock pistol chambered in .45 ACP.
Grumman G-36, a F4F Wildcat aircraft variant
The G36 Nanjing–Luoyang Expressway in China
a 2009 model of the Beechcraft Bonanza aircraft