File:A collage of some 11th to 12th century temple ruins in Un (Oon) village, Khargone, Madhya Pradesh.jpg

English: Un (ऊन) – also spelled as Oon – is a village in southwest Madhya Pradesh. It was a major city before the 13th-century and it has one of the largest collection of sophisticated Hindu and Jain temples ruins in central India, next only to Khajuraho.

Most of the group of temples at Un were destroyed during the Sultanate era, leaving behind temple ruins scattered over 50 square kilometers. These temples and their recovered artwork are generally attributed to the Paramara dynasty. They were built between the late 10th through the 12th centuries. Most are Hindu temples dedicated to Shiva, Vishnu and Shakti traditions. The remaining are Jain temples.

The notable and large, partially-preserved temples of Un include Chaubara Dera 1, Chaubara Dera 2, Nilkanthesvara temple, Mahakaleshvara 1, Mahakaleshvara 2, Hatakeshvara, Ballaleshvara, Omkareshvara, Mahalakshmi, and Gwaleshwara Shantinatha. Of these, all are Hindu except the Chaubara Dera 2 and Gwaleshwara – both 12th-century Jain temples.

For chronology of the temples in the image above, see the scholarly discussion by Swati Adhikari (2004), Chronology of Temples at Un, pp. 1197–1202