Malmbäck is a locality in Nässjö Municipality, in Jönköping County, Sweden. Malmbäck lies at 285 m above sea level. It has 1,071 inhabitants (2023). The nearest city is Jönköping, 29 km to the northwest. Among the landmarks around are Nydala Abbey (29 km), Malmbäck Church (0.3 km) and Almesåkra Church (8.7 km).