Gransäng is a village in Nässjö Municipality, in Jönköping County, Sweden. Gransäng lies at 304 m above sea level. The nearest city is Jönköping, 29 km to the west. Among the landmarks around are Barkeryds kyrka (6.1 km), Eksjö Church (22 km) and Almesåkra Church (12.2 km).