Simpson's-in-the-Strand (full title Simpson's-in-the-Strand, Grand Divan Tavern) is a restaurant situated on The Strand in London that played an important role in the development of chess in the 19th century.

The site began as the Fountain Tavern, home to the celebrated literary group Kit-Cat Club, but was replaced by the Grand Cigar Divan by Samuel Reiss which opened in 1828. The Divan soon became a thriving coffee house among London gentlemen with members paying one guinea a year for use of the facilities. Right from its early years the house was a popular recreational chess venue, and games of chess were even frequently played against other local coffee houses, with runners hired to deliver each move as it was made.

In 1848, Reiss joined forces with the caterer John Simpson to expand the premises, renaming it 'Simpson's Grand Divan Tavern'. It was soon established as one of the top city restaurants noted for using solely British produce, and patrons included Charles Dickens, William Gladstone and Benjamin Disraeli.

Just as Wimbledon is considered the home of tennis and Lord's the home of cricket, Simpson's can justifiably claim the equivalent title for chess. Almost all of the top players of the 19th century played there at some stage: Wilhelm Steinitz, Paul Morphy, Emmanuel Lasker, Johannes Zukertort (who had a fatal stroke whilst playing there), and Siegbert Tarrasch to name but a few.

It was in Simpson's in 1851 that one of the world's great games, the famous "Immortal Game", was played between Adolf Anderssen and Lionel Kieseritzky. It also hosted the great tournaments of 1883 and 1899, and the first ever women's international in 1897.

However, the advent of the automobile and the need to widen The Strand caused Simpson's to close temporarily in 1903, and upon its reopening a year later chess was no longer permitted on the site. This event alone was sufficient to shift the centre of the chess world away from London permanently, with similar clubs in Vienna and Berlin filling its role. In September 2003 a small tournament was held there to celebrate the 175th anniversary of chess on the site, and named after the unofficial world champion during the 1840s and 50s, Howard Staunton.

The restaurant is now owned by The Savoy Group.