- Philatelic & Numismatic Society
- Robotics Club
- Yoga Club
- Library Club
- Environmental Club
- College Magazine
- Chamber Orchestra
- Cinema Society
- Astronomy Club
- Aquarium Club
- Scuba Diving Unit
- Culinary Arts Society
- Aeronautical Societya
- Junior Science & Technology
- Histoarcheo Club
- Geography Society
- Gavel Club
- Student Christian Movement
- English Lit & Debating Society
- Radio Club
- Junior Maths Society
- Road Safety Patrol
- Sinhala Literary & Debating Society
- Seylan Bank Students’ Savings Unit
- HNB Students’ Savings Unit
- Kennel Club
- Buddhist Students’ Association
- Junior English Lit & Debating Society
- Art Club
- Spelling Union
- Carnatic Orchestra
- Canto Perpetua Choir
- Western Band
- Tamil Drama Society
- Hewisi Band
- English Drama Society
- Photographic Club
- Society for Social Work & Welfare
- ICT Society
- Senior Environmental Club
- Hindu Students’ Union
- Political Science Society
- Red Cross Society
- Association of Innovation and Design
- Islamic Society
- Association of Science and Technology
- Quiz Club
- Automobile Club
- Cubing Society
- Health Club
- Tamil Literary and Debating Society
- Wildlife Society
- Thomian Union
- Commerce Society
- Interact Club
- The Ternion
- Classical Music Association
- Media Unit
- Productive Citizenship Society
- United Nations Club
Productive Citizenship Society
The Productive Citizenship Society of S. Thomas’ College Mount Lavinia has been a renowned club since its initiation and has been involved in many college projects for over a decade. The Productive Citizenship Society is well known for organizing the Annual Peace Day and the Annual Sinhala and Tamil New Year Celebrations. Apart from this, the Productive Citizenship Society has been involved in many more significant projects both inside the school and outside the school in the end goal of promoting a productive lifestyle.
Latest Project
Sublime '21
The competition commenced on 07/06/2021 with submissions were opened till 21/06/2021 for age groups of Grade 5 – 8 and Grade 9 – 12 under the topic “Art work of Productive/Social Work Acts”. The winners of each age group will receive cash prizes as follows,1st place – Rs.5000 and 2nd place – Rs.2500. The prize money will be presented once school reopens.