St. Thomas' College (සාන්ත තෝමස් විද්‍යාලය) is a government aided boys’ primary and secondary school in Matara, Sri Lanka.

The college was initially founded in 1844 as a private Anglican school in Wellamadama, Dondra by Rev.

The main concern of the various missionary bodies in Sri Lanka during the early period of British rule in Ceylon was providing English education.

Odantjee was later succeeded by others, including Kumaratunga Munidasa, who promoted Sinhala language and literature.

J. E. M. Fernando, K. B. Jayasuriya and E. A. de L. W. Samarasinghe reactivated the college's old boys association, which was defunct after its inauguration by S. J. Gunasekeram in 1934.