The Siddharth University, Kapilvastu (informally abbreviated as SU or SUK) & The University of Siddharth Nagar, is a state university located at Kapilvastu, Siddharth Nagar, Uttar Pradesh, India.

It was established on 17 June 2015 and affiliates colleges were formerly affiliated to Deen Dayal Upadhyay Gorakhpur University and Dr. Ram Manohar Lohia Avadh University.

The university has more than 280 colleges affiliated to it from six districts of ttar Pradesh, namely Maharajghanj, Siddharthnagar, Sant Kabir Nagar, Balrampur, Basti and Shravasti.

They were formerly affiliated with Deen Dayal Upadhyay Gorakhpur University and Dr. Ram Manohar Lohia Avadh University.

[2] The Siddharth University offers undergraduate and postgraduate courses in the disciplines of humanities, sciences, commerce and management.