S. Thomas College. Mt Lavinia S. Thomas College Mt Lavinia OBA S. Thomas College Bandarawela OBA STC OBA of California, USA East Cost Thomians Association, USA STC OBA of Canada STC OBA of New South Wales, Australia STC Old Boys Association, Australia
STC OBA United Arab Emirates The UK Old Thomians Association STC Class of '83 STC Class of '93 STC Bandarawela Alumni STC Preparatory Alumni STC Class of '93 STC Bandarawela Alumni STC Preparatory Alumni STC Bandarawela Alumni STC Preparatory Alumni STC Preparatory Alumni