Santo Onofre is one of the sixteen civil parishes (freguesias) that make up the municipality (município or concelho) of Caldas da Rainha, Portugal. The parish has an area of 9.2 km² and 10,775 residents.
Along with Nossa Senhora do Pópulo, Santo Onofre is one of the two parishes which make up the city of Caldas da Rainha. Outside the city proper, the municipality of Caldas da Rainha contains an additional fourteen parishes.