Chester Square is a small, residential garden square located in London's Belgravia district. Along with its sister squares Belgrave Square and Eaton Square, it is one of the three garden squares built by the Grosvenor family when they developed the main part of Belgravia in the 19th century. Chester Square is named after the city of Chester, near to which Eaton Hall – the ancestral home of the Grosvenor family – is situated.
- Roman Abramovich, Russian oligarch, second-richest person in the United Kingdom and owner of Chelsea FC.
- Matthew Arnold, 1822–1888, poet and critic.
- Tony Curtis had a house when he was filming The Persuaders!
- Blake Edwards and Julie Andrews lived here for a few years in the early 1970s after their departure from Hollywood
- George II, King of the Hellenes, bought a lease on a house at Number 45 shortly before his return to Greece in 1946.
- Mick Jagger and Marianne Faithfull lived here in 1966-67.
- Nigella Lawson celebrity chef and food writer. Daughter of former Conservative Cabinet Minister, Lord Lawson
- Sir John Liddell, physician and director-general of the Royal Navy medical department lived at No. 72 until his death in 1868.
- Yehudi Menuhin, Baron Menuhin, 1916–1999, American born violinist and conductor.
- Mary Shelley, author of Frankenstein, lived at No. 24 from 1846 to her death in 1851.
- Margaret Thatcher, former British Conservative Prime Minister lived at No. 73 until her death in 2013.
- Wilhelmina, Queen of the Netherlands, had her headquarters at Number 77 during World War II.