Grängsbo is a village in Ovanåker Municipality, in Gävleborg County, Sweden. Grängsbo lies at 170 m above sea level. The nearest city is Falun, 83 km to the south. Among the landmarks around are Alfta Church (9.3 km), Ovanåkers kyrka (3.4 km) and Bollnäs Church (26 km).