Sawantsar is a village in the tehsil of Sri Dungargarh in the Bikaner district of Rajasthan.
Sanwtsar village is the only village in Sri Dungargarh tehsil where people belonging to Dharniya Bishnoi live. This village is 60 km away from Bikaner. This village is situated on National Highway 11 near Seruna. Tobacco is prohibited in this village. There is an idol of Shahid Nihalchand Dharniya. He was awarded with Shorya Chakra in 1999 by the then President of India KR Narayanan. Harishankar Parihar is the first pharmacist in Sawantsar. First doctor from this village is Mahendra Prasad Bishnoi. He is the little brother of Sahid Nihal Chand Dharnia. Presently he is posted at Badnu as medical officer. Harishankar Parihar is the first pharmacist in Sawantsar.