St Michael's Institution (SMI) is a well-known public secondary school in Ipoh, Perak, Malaysia. It is situated on Jalan SP Seenivasagam, formerly Clayton Road. Within the same compound are two primary schools, St Michael's I and II. 

St Michael's Institution is part of the La Sallian worldwide community of schools. The Ipoh City Council has designated the original building block as a historical landmark in Ipoh.