Saint Peter-Marian Central Catholic Junior-Senior High School, was a private, coeducational Catholic junior high and senior high school in Worcester, Massachusetts, United States. The school was more commonly referred to as St. Peter-Marian, or informally as SPM or St. Peter's. It was one of four high schools operated by the Roman Catholic Diocese of Worcester and was accredited by The New England Association of Schools & Colleges in 1969. After the 2019-2020 school year, SPM closed and merged with Holy Name. The school that they created is called Saint Paul’s, it is on the Holy Name campus.

The Diocese of Worcester is a Latin Church ecclesiastical territory, or diocese, of the Catholic Church in central Massachusetts in the United States. The diocese consists of Worcester County. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Boston. The patron saint of the diocese is Paul the Apostle.