Henry Stock FRIBA (1824/5–1909) was a British architect. He served as the county surveyor for Essex for nearly 50 years, and as the surveyor and architect to the Worshipful Company of Haberdashers. The latter appointment led Stock to undertake a considerable number of educational commissions, but his primary field of activity was in the construction of manufacturing sites and warehouses in London.

Henry Stock was born in 1824/5.^{[1][lower-alpha 1]} He came from a family of builders and developers located in London's East End.^[2] Articled to George Allen, of Tooley Street, Southwark, in 1840, Stock took over the business on Allen's death in 1847, going into partnership with a surveyor, William Snooke, at Allen's old offices at 69, Tooley Street.^[3]

Stock and Snooke's business was primarily industrial and commercial. Their buildings included a biscuit factory at Bermondsey for Peek Freans;^{[3][lower-alpha 2]} the Anchor Brewery in Southwark for Barclay, Perkins & Co.; another brewery, the Ram Brewery at Wandsworth for Young & Co.;^[5] and the cotton warehouse on Tooley Street, which had earlier been designed by Snooke and was renamed The Counting House, following its rebuilding after destruction in the 1861 Tooley Street fire.^[3]

Stock and Snooke were appointed architects and surveyors to the Worshipful Company of Haberdashers in 1882, although both had undertaken work for the company prior to this date.^[5] Examples of their work in Wales include: the Design and Technology Centre (Stock alone),^[6] day houses and School House (the former by Snooke in 1877–1878 and the latter by Stock in 1895–1896),^[7] the Chapel and Library (1860–1865),^[8] and the central block (Stock alone 1895–1896),^[9] all at Monmouth School for Boys; Haberdashers' Monmouth School for Girls in the Jacobethan style he favoured for schools,^[10] and West Monmouth School.^[11] Snooke and Stock also undertook residential developments at New Cross and at Telegraph Hill in south London. The New Cross estate had been purchased in 1614 to provide a source of funding for the school established at Monmouth by William Jones.^{[12][lower-alpha 3]}

Stock held the post of County Surveyor for Essex from 1856 to 1900 and designed many public buildings and bridges in the county.^[14] In 1885 he was elected a Fellow of the Royal Institute of British Architects.^[15] He retired to Sandown on the Isle of Wight in 1904 and died there in 1909. His son, Henry William Stock, was also an architect and worked in his father's practice.^[16]

• School House and gateway at Monmouth School for Boys 1894–1895
• Haberdashers' Monmouth School for Girls Main block
• West Monmouth School
• The Counting House, Tooley Street, Southwark, London
• The Ram Brewery complex, Wandsworth
• The bridge at Battlesbridge
• Police station at Saffron Waldon (1884–1886)