The 17 conferences acquired in 2013 will bring a total of 13,700 participants, 52,700 overnight stays and an estimated economic impact of £11.6m.
The events were secured via a collaboration between the Firenze Convention Bureau (FCB), the Firenze Fiera Congress & Exhibition Center and local partners.
Carlotta Ferrari, director of FCB, said: "We are investing a lot in order to promote the city and help it to be recognised in the world of the international meetings industry. We try to offer the best solutions and interesting services to our potential client, offering them site inspections, information desks, best hotel rates and a series of online tools and services dedicated to the conference participants and aimed to increase the number of visitors to the city."
Among the major events won is the World Ventures Convention 2013, an American multilevel marketing company that brought more than 3,500 people to the Nelson Mandela Forum in Florence in November 2013.
The World Congress on the Use of Biostimulants in Agriculture will take place in November 2015, the International Congress of Acoustics and Vibration in July 2015 and the 18th European Conference on Mobility Management will take place in May 2014.
Florence will also host the ICS Continence Annual Meeting in September 2017, organised by the International Continence Society, which will attract around 2,000 participants from all over the world.
The SRNT Nicotine and Tobacco in March 2017 will be organised by the Society for Research on Nicotine and Tobacco and will draw in around 1,000 participants.