Here is the list of top 20 National Institutes Of Technology of India which you are looking for .

National Institute of Technology, Warangal Andhra Pradesh
National Institute of Technology, Tiruchirapalli Tamil Nadu
National Institute of Technology, Surathkal, Mangalore Karnataka
National Institute of Technology, Calicut Kerala
Motilal Nehru National Institute of Technology, Allahabad Uttar Pardesh
Malviya National Institute of Technology, Jaipur Rajasthan
National Institute of Technology, Kurukshetra Haryana
Visvesvaraya National Institute of Technology, Nagpur Maharashtra
National Institute of Technology, Rourkela Orissa
Maulana Azad National Institute of Technology, Bhopal Madhya Pradesh
Sardar Vallabhbhai National Institute of Technology, Surat Gujarat
National Institute of Technology, Durgapur West Bengal
Dr. B R Ambedkar National Institute of Technology, Jalandhar Punjab
Himachal Pradesh
National Institute of Technology, Jamshedpur Jharkhand
National Institute of Technology, Raipur Chhattisgarh
National Institute of Technology, Patna Bihar
National Institute of Technology, Silchar Assam
National Institute of Technology, Hazartbal, Srinagar Jammu and Kashmir
National Institute of Technology, Agartala Tripura