Hi Ashish,

The best Diploma in Engineering government Colleges in Uttar Pradesh are as follows:-

• Aligarh Muslim University, Aligarh
• Government Polytechnic, Lucknow
• Institute of Engineering and Rural Technology, Allahabad
• UP Rajarshi Tandon Open University, Allahabad
• Dr Ambedkar Institute of Technology for Handicapped, Kanpur
• Government Polytechnic, Jaunpur
• Central Institute of Plastics Engineering and Technology, Lucknow
• Shri Ramdevi Ramdayal Tripathi Mahila Polytechnic, Kanpur
• Government Polytechnic, Gorakhpur
• National Sugar Institute, Kanpur

Refer here for more info - https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-india?state=Uttar%20Pradesh&ownership=Public/Government&degree=Diploma

To know your other best admission possibilities of Institutes & branches in JOSSA & State counseling as per your percentile, You can use JEE Main College Predictor tool given below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!