Gangaramaya Temple (Sinhala: ශ්‍රී ගංගාරාම මහාවිහාරය śrī gangārāma mahāvihāraya, Tamil: ஸ்ரீ கங்காராம மகாவிகாரம் Srī Gaṅgārāma Makāvikāram) is one of the most important temples in Colombo, Sri Lanka, being a mix of modern architecture and cultural essence.

Most notable for tourists is the architecture of Seema Malaka, which was built with donations from a Muslim sponsor to the design of Geoffrey Bawa.

Don Bastian de Silva Jayasuriya Goonewardane, a 19th-century shipping merchant who was seeking suitable land to build a temple for the Matara Sri Dharmarama thero, bought a beautiful tract belonging to three Moors, and filled and prepared the land at great expense.

A 'Bo' sapling brought from the great Sri Maha Bhodiya in Anuradhapura, was planted with his own hands and nurtured.

The temple is involved in Buddhist welfare work including old peoples' homes, a vocational school and an orphanage.