The students could be admitted to the International B.Sc. Programs offered by Faculty of Science, Mahidol University through (I) Direct admission by Faculty of Science, Mahidol University, and (II) Thai University Central Admission System (TCAS), which is administered by the Council of University Presidents of Thailand (CUPT) and Mahidol University.
SIM Admission Dates & Deadlines 2026 
| DIRECT ADMISSION | THAI UNIVERSITY CENTRAL ADMISSION SYSTEM (TCAS) |
(I) EARLY DIRECT ADMISSION: 6 Sep-15 Oct 2025
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 1st round: Portfolio (1/1): 1-16 Oct 2025
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| (II) REGULAR DIRECT ADMISSION | |
1st round: Portfolio:16 Oct 2025 – 8 Jan 2026 
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1st round: Portfolio (1/2): 1 Dec 2025 – 8 Jan 2026
ONSITE INTERVIEW (Sat 24 Jan 2026) |
2nd round: Quota: 9 Jan – 31 Mar 2026
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2nd round: Quota: 20 Mar- 8 Apr 2026
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3rd round: Direct admission: 1 Apr-15 May 2026
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3rd round: Admission: 6 – 12 May 2026
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4th round: Direct admission: 16 – 31 May 2026
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4th round: Direct Admission: TBA
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5th round: Direct admission: 1 – 15 Jun 2026
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