The three-day meeting in Cison di Valmarino in northeastern Italy, which will also feature major developing nations, will seek solutions to sharp rises in the price of agricultural goods and the problems of providing food security to people around the world.
G8 leaders agreed in June last year that its members should work together to address global concerns over the price and supply of food, paving the way for the landmark meeting.
Although the global economic crisis has eased price pressures from levels that sparked food riots in 2008, Italian Agriculture Minister Luca Zaia said there remained a need to overhaul global food strategy.
"Italy, which is one of the leading countries in world agriculture, intends to strongly press the necessity of a general revision of global strategy, in connection with providing food security," he said.
The ministers will look at limiting the role of speculators in the pricing of agricultural goods, stimulating investment in the agrarian sector, and attracting aid to advance farming techniques in poorer countries.
As well as agriculture ministers from the United States, Russia, Canada, Japan, Britain, France, Germany and Italy, counterparts from Brazil, India, China, Mexico, South Africa, Australia, Argentina and Egypt will attend, along with the European Union's agriculture commissioner and several relevant international agencies.