St. Andrew is a Roman Catholic Church in Sag Harbor. It is one of five churches that supports Stella Maris Regional Catholic School, which is just across the street from St. Andrew. The church offers religious education for kindergarten students through fifth-graders at 9 am on Sundays, and for sixth through eighth grades at 7 pm on Wednesdays. The pastor is the Reverend Peter Devaraj and the adjunct pastor is the Reverend Andrew Blake.