PSU shares a joint 5th place ranking among universities in Thailand, together with Kasetsart University, Khon Kaen University, King Mongkut's Institute of Technology Ladkrabang, and King Mongkut's Institute of Technology Thonburi. Worldwide, PSU has been placed in the 801-1,000 range by QS World University Rankings, as announced on 8 June 2022. Ranking is determined by the following indicators:

1. 1Academic Reputation (40%)
2. Employer Reputation: (10%)
3. Faculty Student Ratio: (20%)
4. Citations per Faculty (20%)
5. Proportion of teachers and foreign students (10)

For more details, please see https://www.topuniversities.com/university-rankings/world-university-rankings/2023

QS Stars Ratings has assessed PSU as a four-star university, denoting high international standards and excellence in research and teaching, along with a good environment for students and staff.