St or St. Colman's may refer to:
Schools St Colman's College, Claremorris, a boys secondary school in County Mayo, Ireland St Colman's College, Fermoy, a boys secondary school in County Cork, Ireland St Colman's College, Newry, a boys secondary school in County Down, Northern Ireland St Colman's High and Sixth Form College, Ballynahinch, County Down St Colman's Community College, Midleton, County Cork St. Colman's Catholic School, Turtle Creek, Pennsylvania, United States, a defunct Catholic school St. Colman's Primary School (disambiguation)
Cathedrals and churches St Colman's Cathedral, Cobh, County Cork Cloyne Cathedral or St. Colman's Cathedral, Cloyne, County Cork St. Colman's Church, Claremorris, County Mayo St. Colman's Church, Gort, County Galway, Ireland St. Colman's Church, East Kingston, New York, United States
Stadiums St Colman's Park, Cobh, a football stadium