102 Eaton Square is a house in Eaton Square, Belgravia, London, England. Until 2016, it was home to the Instituto Cervantes of London, the Spanish cultural centre, now relocated to 15–19 Devereux Court, Strand.
In July 2014, it was reported to have been bought by the Russian billionaire Andrey Goncharenko, using an offshore company, for £15 million.
It is Grade II* listed.
In January 2017, squatters from the Autonomous Nation of Anarchist Libertarians (ANAL) occupied 102 Eaton Square, which had been empty, and opened it as a "homeless shelter".