John Whichcord Sr. (1790–1860) was a British architect who worked in Maidstone, Kent and designed many public and institutional buildings in the town.
He was articled to the Bath architect Charles Harcourt Masters and then worked in the drawing office of the architect of the London Docks, Daniel Asher Alexander, who was also engaged on the prison at Maidstone.
He was also surveyor to the Medway Navigation Company, carrying out various works on the river, including tidal locks.
The Kent County Lunatic Asylum is described as his Magnum Opus by John Newman (Buildings of England Series, 1969).He designed the new churches of St John, Blindley Heath in Surrey, and Holy Trinity, Maidstone, St Stephen, Tovil, Holy Trinity, East Peckham, St Mary the Virgin, Platt, and Christ Church at Dunkirk, near Faversham, all in Kent.
He also produced plans for enlargement or reseating of several existing ones,[3] including St Peter's Church, Maidstone.