Bishop Anstey High School (BAHS), also known as Bishop Anstey or St. Hilary's, is a government-assisted all-girls secondary school in Port of Spain, Trinidad and Tobago. It was founded by the Anglican Bishop Arthur Henry Anstey and opened on January 13, 1921. The school is governed by a Board of Management appointed and chaired by the Bishop of Trinidad and Tobago. Its assets are controlled and managed by The Bishop Anstey Association.