- 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
Association of Innovation and Design
Since the re-establishment of this association in January 2021 after a period of inactivity, The Association of Innovation & Design of S.Thomas’ College Mount Lavinia has taken steps to ensure its activeness within the clubs and societies of college by recruiting individuals who show a keen interest in the fields of innovation and design. The Association takes pride in uplifting the innovative thinking and designing skills within fellow Thomians and wish to do so in the years to come.
Latest Project
Design Workshop
The webinar to be held in collaboration with the Academy of Design will enable the Association to educate the students on Visual Communication, Motion Graphics and Animation as well as enabling them to put their creativity and design ability to good use by taking part in various activities which brings out the creative aspect of the student's mind.