Photograph of a full-length portrait of Thomas Leverton Donaldson, standing, facing three-quarters to the right. He poses with his hands by his side, looking to the front. There is a small table, on which some books are placed, in front of him.

Donaldson was a British architect, pioneer of architectural education and Professor of Architecture at University College, London. He designed various buildings including the Wilkins building at University College London, and designed its Flaxman Gallery and library buildings. He also designed All Saints Church in Gordon Street, London, and was involved with the Great Exhibition of 1851. He was a member of the committee, which included Jacques Ignace Hittorff and Charles Robert Cockerell, formed in 1836 to determine whether the Elgin Marbles and other Greek statuary in the British Museum had originally been coloured.