The London XI was a football team that represented the city of London in the 1955–58 Inter-Cities Fairs Cup.

The first Inter-Cities Fairs Cup took place over three seasons from 1955 to 1958. The competition began with a group stage with each team playing home and away against each other. Due to the competition rules which stated only one side from each city was allowed to compete, many cities with several football clubs picked the best players from those teams to create a city representative side. One of these, the London XI, went on to reach the final where they were beaten over two legs by the Barcelona XI.