John Dennis Lennon (23 June 1918 - 16 April 1991) was a British architect, interior designer, and furniture designer. He was responsible for the interior design of the Queen Elizabeth 2 and of 190-192 Sloane Street, London.

Lennon worked for Fry, Drew & Partners and became the first director of London's Rayon Centre. In 1950, he formed his own firm, Dennis Lennon and Partners, later significantly