Kalwa is a village in tehsil Makrana of Nagaur district in Rajasthan. It is situated at a distance of 17 km from Makrana in the west direction on Khatu-Nagaur road. This is a well-connected village by road and rail. The village was founded by Kaluji Jat of Dudi gotra. Hence the name of village became Kalwa. As of 2001 census the population of the village is 6836, out of which 1360 are SC people.

The tamrapatra of Jagir of Kalwa was given to Kaluji Dudi by Delhi Sultnate. Kaluji built many ponds, developed gochar lands and dug a Bera (still present) named Dhala in his Jagir. Kaluji had two sons Ashaji and Dedaji. Their descends are called Ashawat Dudi and Dedawat Dudi. After their death the Meratias of Borawad invited Dudis on feast and killed many of them and occupied the Jagir of Kalwa. The remaining Dudis moved to other parts of Rajasthan, Haryana, Uttar Pradesh, Madhya Pradesh, Bihar, Punjab etc. Some Dudis moved to far off Dhanis in Kalwa region. The famous Jat woman Bhakt Shiromani Karmabai was born in 1615 in the family of Jiwanji Dudi in this village. The population of the village has mainly the Jats. The Jats in the village Kalwa and Dhanis around it is about 4000. There are 500 families of Jats residing in the village out of them 250 families are of Dudi Jats. The other Jat Gotras in the village are Bheenchar, Kalwania, Talwada, Jakhar, Junawa, Jeela, Anwala, Tetad, Burdak, Murawatia, Tandi, Kurdia, Khileri, Dhaswa, Lodhan, Bethwa, Gora, Choyal, Bugalia, Rinwa, Nala, Jajdia, Manga, Dara, Kheechad, Dhadaria, Nain, Bhakar, Beniwal, Dukia, Balunda, Rad and Bajya.