Quinlan and Francis Terry Architects LLP is a firm of architects who specialise in new build classical architecture. The office was established by Raymond Erith in 1928, making it the oldest existing practice of classical architects. It is based in Dedham, a village near Colchester which is 60 miles north east of London.

The senior partner, Quinlan Terry, works in collaboration with his son Francis, on all projects. The designs are detailed by a small group of draftsmen, most of whom have been with the practice ever since their apprenticeship. The firm has considerable experience of a variety of projects both in the UK and overseas.