John Johnstone (1818–1884) was an architect who was responsible for the design of many public buildings in North East England in the mid 19th century.
Born in Kilmarnock to a Dunfermline contractor, Johnstone trained as an architect before becoming clerk of works to the partnership of George Gilbert Scott and William Bonython Moffatt at Spring Gardens in London.
[1] He moved to Newcastle upon Tyne in the mid-19th century, where he went into partnership with William Alexander Knowles.
Elected as the President of the Northern Architectural Association in 1875, he died in Newcastle upon Tyne in 1884.
[2] Johnstone's major works included:[3]