Didwana (Rajasthani: डीडवाना) is a town in Nagaur district of Rajasthan in India. It lies in the Thar Desert. The town is thought to be more than 5,000 years old. The name 'Didwana' is considered as stumbled name of 'Deen Deewana'. The land is known for the 'Deen Deewana' (Loopy for Islam). Later it converted in to 'Deedwana' and 'Didwana'.