Thomas Charles Sorby FRIBA FGS (1836 – 15 November 1924) was an English-Canadian architect. Born in Wakefield, England, he emigrated to Canada in 1883, where he worked for much of the time in Vancouver and Victoria, British Columbia.

In England, as surveyor of Police Buildings in the Metropolitan District and in the County Courts of England and Wales, Sorby designed police stations and court houses in stone and brick, frequently in the Classical style. When working independently, he designed churches and mansions in the same materials, but often in the Gothic Revival or Arts and Crafts style. However in Canada he was employed for some years by the Canadian Pacific Railway; a client which often required chalet-style hotel and depot designs in wood,

Sorby entered a large number of design competitions for civic buildings and town plans in England and Canada. In England he invented a new type of skylight, and a remotely-controlled sash fastener, which he used in his own building designs.

Sorby was "a member of an old Sheffield family", according to the Sheffield Independent newspaper. However, he and his immediate family were from Wakefield. His parents were Thomas Sorby (1798–1845), a farmer at Brice Hale, Chevet, Wakefield, West Riding of Yorkshire, and Harriet Ann Rayner (1808–1841), who was baptised at Sandal Magna, Wakefield. Sorby was born in Chevet in 1836, and baptised as Thomas Charles Sorby in St Helen's Church, Sandal Magna, on 2 May 1836. He had one surviving brother, William (1837–1915), a steel manufacturer who emigrated to New Zealand.

Sorby married Elizabeth née Sorby (1829–1907) on 11 October 1857, in Islington, and they had eight children, born in London. In 1864, the family was living at 15 Bedford Row, London. By the 1870s the family was living at 27 Brunswick Square, London. Sorby emigrated to Canada in 1883. He died on 15 November 1924, in Victoria, British Columbia, and was interred in Ross, Manitoba, Canada.

Sorby studied architecture in London. He spent time in France, before becoming a pupil of Charles Reeves, with whom he designed Salford County Court.

In December 1866, Sorby was appointed, by the Secretary of State for the Home Department, to the Surveyorships of Police Buildings in the Metropolitan District and in the County Courts of England and Wales, following the death of his mentor Charles Reeves, who had held tenure. While holding that surveyorship "for less than two years", Sorby was involved in the erection of numerous civic buildings, but his lengthy 1867 efforts to negotiate with Merthyr Tydfil corporation to build a town hall came to nothing. By 1871 he was architect to the Lords Commissioners of Her Majesty's Treasury. Sorby was "by some accounts a difficult character, however he was not shy of writing in to building journals to assist on the subject of construction techniques.

Between 1883 and 1887, Sorby was working in Montreal, and Vancouver where "his work [was] well regarded and extensive". From 1887 he was designing commercial buildings and residences in Victoria, British Columbia. "He was also working on plans for the development of Victoria's Inner Harbour and port facilities".