Old Saint Paul's is an historic church of the Scottish Episcopal Church in the heart of Edinburgh's Old Town in Scotland. It is one of the original congregations of the Scottish Episcopal Church, part of the Anglican Communion, which evolved with the adoption of Presbyterian governance by the established Church of Scotland.

The Cathedral Church of Saint Mary the Virgin, commonly known as St Mary's Episcopal Cathedral, is a cathedral of the Scottish Episcopal Church in the West End of Edinburgh, Scotland; part of the worldwide Anglican Communion.