St. Mary's
- Angola (Portugal)
- Cape St. Mary's
- Lady chapel
- Mount St. Mary's (disambiguation)
- Municipality of the District of St. Mary's
- North St Marys, New South Wales
- Saint Mary (disambiguation)
- Saint Mary Parish, Jamaica
- Saint Mary's Bay (disambiguation)
- Saint Mary's Cathedral (disambiguation)
- Saint Mary's Cemetery (disambiguation)
- Saint Mary's Church (disambiguation)
- Saint Mary's College (disambiguation)
- Saint Mary's Gaels
- Saint Mary's Hospital (disambiguation)
- Saint Mary's Island (disambiguation)
- Saint Mary's River (disambiguation)
- Saint Mary's University (disambiguation)
- Saint Marys, Floyd County, Indiana
- Saint Marys, Franklin County, Indiana
- Sainte-Marie (disambiguation)
- Saintes-Maries-de-la-Mer
- Santa Maria (disambiguation)
- St Mary's (Trafford ward)
- St Mary's Airport, Isles of Scilly
- St Mary's College, Crosby
- St Mary's Hospital, London
- St Mary's Lighthouse
- St Mary's River, Nova Scotia
- St Mary's Saints
- St Mary's Stadium
- St Mary's on the Sturt
- St Mary's, Devon
- St Mary's, Isles of Scilly
- St Mary's, Orkney
- St Mary's, Southampton
- St Marys railway station, Sydney
- St Marys, New South Wales
- St Marys, South Australia
- St Marys, Tasmania
- St. Mary's (Whitechapel Road) tube station
- St. Mary's Academy (disambiguation)
- St. Mary's Bay, Newfoundland and Labrador
- St. Mary's City, Maryland
- St. Mary's County, Maryland
- St. Mary's GAA
- St. Mary's Hall (disambiguation)
- St. Mary's Road (disambiguation)
- St. Mary's School (disambiguation)
- St. Mary's Seahawks
- St. Mary's Strip
- St. Mary's railway station (England)
- St. Mary's, Alaska
- St. Mary's, Athlone (civil parish)
- St. Mary's, Colorado
- St. Mary's, Fore
- St. Mary's, Newfoundland and Labrador
- St. Mary's, Trinidad and Tobago
- St. Marys Area Water Authority
- St. Marys, Georgia
- St. Marys, Kansas
- St. Marys, Ohio
- St. Marys, Ohio
- St. Marys, Ontario
- St. Marys, Pennsylvania
- St. Marys, South Dakota
- St. Marys, West Virginia
- Île Sainte-Marie