Näcktjärn is a village in Söderhamn Municipality, in Gävleborg County, Sweden. Näcktjärn lies at 75 m above sea level. The nearest city is Gävle, 72 km to the southeast. Among the landmarks around are Trönö gamla kyrka (10.0 km), Hanebo Church (15.3 km) and Söderala church (7.8 km).