Belsize Architects are a British architectural practice based in North London, UK.

[2] Belsize Architects have completed buildings in a number of different sectors, ranging from commercial to residential.

[2] Notably, the practice has been commissioned to design new student accommodation for the University College, Oxford, after having previously completed the University College Boathouse for the institution,[3] a project which won a Royal Institute of British Architects (RIBA) Award in 2008.

[4] Previous projects include: Klippan House in Hampstead, London (originally known as 'Thwaitehead') – a large Victorian Grade II listed building originally designed and lived in by Ewan Christian.

The practice's conversion of The Brassworks, a former Boosey and Hawkes musical instrument factory, into apartments for the Church Commissioners, was shortlisted for a RIBA Award in 2013.