To celebrate 200 years since the school was founded on 5 June 1823 by Sir Thomas Stamford Raffles, SingPost released a limited edition RI200 stamp as part of their Anniversary Stamp Series. The stamp featured four of RI's campuses throughout the school's history.

The sale of the RI200 anniversary stamp ($0.80), First Day Cover ($3.75) and Presentation Pack ($4.85) had commenced on 28 April 2023 at all Singapore Post Offices and on the SingPost website. The RI200 anniversary stamp had been released together with Sports SG's 50th anniversary stamp. 

SingPost set up a booth at our RI Open House and Carnival on 29 April 2023.