Quinlan Terry, English architect, designed the Brentwood Cathedral

John Quinlan Terry CBE (born 24 July 1937) is a British architect. He was educated at Bryanston School and the Architectural Association. He was a pupil of architect Raymond Erith, with whom he formed the partnership Erith & Terry.

Quinlan Terry is a well-known representative of New Classical architecture and the favourite architect of Charles, Prince of Wales. He has a keen interest in how traditional architecture contributes to the debate on sustainability and has lectured frequently on the subject.

Quinlan Terry continues to practice full time with partners Roger Barrell and Eric Cartwright under the name Quinlan Terry Architects LLP.