G42

G42, G-42 or G.42 may refer to:


 * HMS Lincoln (G42), a United Kingdom Royal Navy destroyer
 * SMS G42, an Imperial German Navy torpedo boat
 * G42 Shanghai–Chengdu Expressway in China
 * Victorian Railways G class locomotive number
 * Glock 42 pistol
 * G42 (company), an Emirati artificial intelligence company