The three European cities were voted over Amsterdam and Orlando as finalists to host the Gay Games X
London could host the Gay Games 2018, having been shortlisted with Paris and Limerick.
Not to be confused with outGames, the Gay Games, started in San Francisco in 1982, are hosted every four years and are open to people of any sexual orientation.
If London wins the Gay Games bid, the events will likely be hosted in the city’s Olympic Stadium.
London mayor Boris Johnson said: ‘This is fantastic news and a testimony to the hard work of the London Gay Games bid team.
‘London could host a world-beating event in 2018, underlining our city’s reputation as a tolerant place to live and visit. I wish London’s organising team every success as they progress to this next crucial stage of the selection process.’
In a month’s time, a team from the Federation of Gay Games (FGG) will visit all three cities for a site inspection.
Kurt Dahl, FGG co-president said: ‘They will spend three days in each city, visiting the key venues, meeting the leaders of the bidding organizations, and attending community events.
‘At the end of these visits, the inspectors will prepare a report for the FGG site selection meeting which will take place at the Federation’s Annual General Assembly in early October in Cleveland, host of the 2014 Gay Games presented by the Cleveland Foundation.’
The Gay Games 2014 are being held in the cities of Cleveland and Akron, Ohio.
For more information, visit the Gay Games website.