St. Martin's or St. Martins may refer to:

Places

St. Martins, Missouri, a city in the USA

St Martin's, Isles of Scilly, an island off the Cornish coast, England

St Martin's, North Yorkshire, England

St Martins, Perth and Kinross, Scotland

St Martin's, Shropshire, a village in England

St Martin's, Guernsey, a parish in the Channel Islands

St Martins (Hillingdon ward), a former electoral ward of Hillingdon London Borough Council that existed from 1978 to 2002

St Martin's (Lambeth ward), electoral ward of Lambeth, London, from 1978 to 2002, and since 2022

St Martins (Trafford ward), a former electoral ward of Trafford, Greater Manchester, from 1973 to 2003

Saint Martins Parish, New Brunswick, Canada

Fundy-St. Martins, a village therein

St Martins, New Zealand, a suburb of Christchurch, New Zealand

St. Martin's Island, a coral reef island of Bangladesh in Bay of Bengal

Saint Martin's Island a small island at the mouth of Green Bay in Wisconsin

St. Martin's, Wisconsin, a former hamlet in the Town of Franklin, Milwaukee County, Wisconsin

Saint Martins, Barbados, a village in Saint Philip Parish

Religion and folklore

St. Martin's Church (disambiguation), churches dedicated to St Martin

St. Martin's Day, or Martinmas, falling on November 11

St. Martin's Land, an enigmatic and likely mythical location associated with the legend of the green children of Woolpit

Education

St Martin's Catholic Academy, a secondary school in Leicestershire, England

St Martin's College, an institution of higher education in the United Kingdom

Saint Martin's University, Lacey, Washington

St Martin's School (disambiguation)

Central Saint Martins, a school in London, UK

Sport

St Martin's GAA (County Kilkenny), a Gaelic Athletic Association club based in the Ballyfoyle/Coon/Muckalee area of County Kilkenny, Ireland

St. Martin's GAA (Wexford), a Gaelic Athletic Association club in Piercestown, County Wexford, Ireland

Other uses

St. Martin's Press, a New York publisher

St Martin's Theatre, in the West End of London

St. Martins station, a SEPTA Regional Rail station in Philadelphia, Pennsylvania, United States