Dharmasoka College is a coed school in Sri Lanka.

It was supported by the Buddhist Theosophical Society led by Colonel Henry Steel Olcott, and accordingly is one of Sri Lanka's oldest schools.

Dharmasoka College is situated in Ambalangoda within the administrative district of Galle, Sri Lanka.

In 1913, the college was established with fifteen students by its founder, Mudliar Santiago Thomas de Silva, who spent his own wealth to establish and develop the college.

[1] On 10 April 1929, the Sugatha Sasanodaya Samithiya (a benevolent society) took over administration of the college.