Un is a town and a nagar panchayat in Shamli district in the Indian state of Uttar Pradesh.

[1] It has an average elevation of 240 metres (787 feet).

As of the 2011 Census of India,[2] Un had a population of 15,124.

Males constitute 55% of the population and females 45%.

In Un, 15% of the population is under 6 years of age.