Söderby is a village in Gnosjö Municipality, in Jönköping County, Sweden. Söderby lies at 236 m above sea level. It has 56 inhabitants. The nearest city is Värnamo, 24 km to the southeast. Among the landmarks around are Båraryd Church (13.6 km), Nydala Abbey (36 km) and Kävsjö church (10.5 km).