St Mary's Abbey may refer to:
Ireland St. Mary's Abbey, Dublin St. Mary's Abbey, Glencairn St. Mary's Abbey, Trim
Germany St. Mary's Abbey, Engelthal St. Mary's Abbey, Fulda
United Kingdom Wales St Mary's Abbey, Bardsey Island
England St Mary's Abbey, Kenilworth St Mary's Abbey, Leiston Abbey Church of St Mary, Nuneaton St Mary's Abbey, Thetford St Mary's Abbey, West Malling St Mary's Abbey, Winchester St Mary's Abbey, York
United States St. Mary's Abbey, New Jersey