St. Mungo's may refer to:
St Mungo's Cathedral, Glasgow Glasgow Cathedral and the High Kirk of Glasgow St Mungo's Hospital for Magical Maladies and Injuries from the Harry Potter books St Mungo's (charity), London's largest homelessness charity St Mungo's Parish Church, Clackmannanshire, Scotland St Mungo's Church, Dearham, Cumbria, England
See also Little St Mungo's Chapel, Glasgow (also known as St Mungo's Beyond the Walls and St Mungo's in the Fields)