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
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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