St. Gabriel's Secondary School ("SGSS" or colloquially "St. Gabs") is an all-boys Roman Catholic secondary school in Serangoon, Singapore. The school is affiliated to St. Gabriel's Primary School and Catholic Junior College and is one of 7 Gabrielite schools in Singapore. Classes are offered in the Express, Normal Academic and Normal Technical streams. The principal of St. Gabriel's Secondary School is Mr Stephen Chin and its vice-principals are Miss Jackie Cheng and Mr Anith Kumar S/O Nadesan.