Hi Archil,

The the best colleges/universities for Diploma in India are as follows:-

• Lovely Professional University, Phagwara
• Maharaja Sayajirao University of Baroda, Vadodara
• Jamia Millia Islamia, New Delhi
• Veermata Jijabai Technological Institute, Mumbai
• Reva University, Bangalore
• Techno India University, Kolkata
• Integral University, Lucknow
• Indira Gandhi National Open University, New Delhi
• Hindustan Institute of Technology and Science, Chennai
• Aligarh Muslim University, Aligarh

Refer here for more info - https://engineering.careers360.com/colleges/list-of-diploma-engineering-colleges-in-india

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!