G40

G40, G-40 or G.40 may refer to:

Transportation

 * G40 Shanghai–Xi'an Expressway in China
 * a model of the Volkswagen Polo automobile

Military

 * Gloster E.28/39, also known as the Gloster G.40, a United Kingdom jet developed during World War II
 * SMS G40, an Imperial German Navy torpedo boat

Other

 * Generation 40, a Zimbabwean political faction in ZANU-PF supporting Grace Mugabe, the wife of Robert Mugabe
 * IBM ThinkPad G40, a laptop computer