Organisations
- Chelsea Building Society, a UK building society
- Chelsea College of Art and Design, an art and design college in London, England
- Chelsea Food Services, an airline catering company
- Chelsea Piers, a sports and entertainment complex in New York City, United States
- Chelsea porcelain factory, a factory that was in London, England
- Chelsea Sugar Refinery, a factory in Birkenhead, New Zealand
- Hotel Chelsea, a hotel in New York City, United States
- Royal Hospital Chelsea, home for former soldiers in London, England
- Chelsea pensioner, an occupant of Royal Hospital Chelsea
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