The host city for the 2015 One Young World summit will be revealed in June, with the announcement of the 2016 host city being made at the 2014 summit in Dublin in October.
The annual event will bring together world leaders to discuss global issues, with high-profile figures from a range of backgrounds delivering a series of sessions to delegates.
Kate Robertson, Havas Worldwide co-global president, who founded the charity One Young World with David Jones, said: "All of the candidate cities are international, diverse and youth-driven cities with world-class convention facilities.
"Hosting a One Young World Summit is a unique opportunity for a city to engage with leaders from every country in the world and we are looking forward to seeing what kind of welcome the cities will offer One Young World delegates."
More than 1,250 delegates from 190 countries attended the 2013 summit, which took place in Johannesburg, South Africa.
The 2014 One Young World Summit will take place in Dublin at The Convention Centre Dublin in October, having beaten off stiff competition from Hong Kong and Edinburgh.
The 2015 and 2016 summits will be the charity's sixth and seventh annual summits, with previous host cities including London, Zurich and Pittsburgh.