SANMUN 2023 was hosted in August.  Mr Edgar Pang, Honorary Consul General of Singapore was the Chief Guest. The Futuristic UN General Assembly, All India Political Party Meet, Economic and Social Council, Human Rights Council, World Health Organization, International Press Corp, United Nations World Tourism Organization, United Nations Educational, Scientific and Cultural Organization, were the 8 committees that were involved this year.

Chettinad Vidyashram won the Best School award and Vidya Mandir, Mylapore was declared the Runner Up.