Hey Girish, assuming this is about Maharashtra state MBBS admissions, NT stands for Nomadic Tribes. Reservation for all 3 types of NTs comes under OBC. You should go to the official Maharashtra Government and apply for a caste certificate if you don't already have one. You can get information about what castes come under the same on there. For more information head over to: https://medicine.careers360.com/articles/maharashtra-mbbs-admission