Gadag Junction railway station is a NSG-4 Category railway station under South Western Railway in Gadag district, Karnataka. It serves Gadag-Betageri. The station consists of three platforms. The station lies on Guntakal–Vasco da Gama section HDN-7A and also connects the Gadag–Hotgi railway line. The Gadag–Hotgi railway line was converted from metre gauge to broad gauge in December 2008.