Office of the Dean, Faculty of Science, Mahidol University consists of 13 division
- Undergraduate Curriculum Unit
- Educational Service Unit
- Science Career Support Unit
- Student Affair Unit
- Information Technology & Big Data Unit
- Data Analytics & Information Literacy Unit
- Library Resources & Information Services Unit
- Archives & Museum Unit
- Public Relations Unit
- Special Affairs Unit
- Budget Planning Unit
- Strategic Planning and Quality Development Unit
- Documents and Records Unit
- Personnels Unit
- Physical and Environmental Unit
- Reception and Information Services Unit
- Computer and Communication Unit
- Software Development Unit
- Audio-visual Unit
- Finance Unit
- Accounting Unit
- Budget Unit
- Procurement Unit
- Research Funding and Educational Scholarship Unit
- Business Development Unit (BDU)
- Plan and Development Unit