Inaruwa (Nepali: इनरुवा) is a municipality and headquarters of Sunsari District located 25 km (16 mi) east of the Koshi Barrage and 18.6 km (11.6 mi) east of Koshi Tappu Wildlife Reserve in Province No. 1, Nepal.
It covers an area of 77.92 km2 (30.09 sq mi).
Inaruwa Municipality is a district headquarters located in Sunsari District under Province No. 1 of Nepal. According to the geographical demarcation, the name of the town is Inaruwa, surrounded by Gadhi Municipality in the east, Bhokraha rural Municipality in the west, Itahari Sub-metropolitan Municipality and Ramdhuni Municipality in the north and Harinagar Municipality in the south. The municipality is politically divided into 10 wards. Inaruwa is one of the six municipalities in the district, while Ramdhuni, Duhabi and Barah are the other municipalities. This Inaruwa Municipality has become a municipality from the Panchayat in the year 2047 BS.