.District Institute of Education and Training (DIET) is a specialized educational institution established to improve the quality of school education at the district level. DIETs provide academic and resource support to teachers, conduct pre-service and in-service training programs, develop teaching-learning materials, and promote innovative practices in education.

DIET U.S. Nagar is located in Udham Singh Nagar district in the state of Uttarakhand, with the headquarters in Rudrapur, was established in 2006.