St. Michael's High School, Patna, also referred to as SMHS Patna or SMHS for short, is a private, Roman Catholic, co-educational high school in the Digha neighborhood of Patna, Bihar, India. Established in 1858 initially as an orphanage, it is one of the oldest schools in the state of Bihar, and is currently managed by the Patna Province of the Society of Jesus. It was founded by the first Bishop of Patna, Msgr. Anastasius Hartmann.