John-Michael O'Sullivan is a London-based architect and writer.

He was worked in London, Dublin and Milan, and designed retail concepts for clients including Crombie, Fortnum & Mason, John Rocha and Mercedes Benz.

He has written on fashion, film, architecture and design for a range of print and digital publications, including Esquire, The Observer, Archivist, Memorandum, Fiasco, Creem, Notion, Metal and Vaga, as well as reporting from fashion weeks for NowFashion.com. He is features editor for the menswear biannual Article.