Dhasa is a small city and railway junction in Bhavnagar District of Gujarat. Geographycally there are two small towns, which are Dhasagam and Dhasa junction. Dhasa junction was one of the first railway junctions to be established in 1880 on Bhavnagar-Gondal State Railway, Metre Gauge line from Dhasa to Dhoraji.
It is situated at distance of 75 km from Bhavnagar, 45 km from Amreli and 100 km from Rajkot. Dhasa is an important point on S.H.25 Which connects Bhavnagar to Rajkot. The population is around 10,000. The main industries are Oil Mills and Cotton Ginning Mills.
There is Naga temple of kuladevata of Sanghrajka family here.
Coordinates: 21°48′N 71°31′E / 21.800°N 71.517°E