Monza has been the home of the Italian Gran Prix since 1922
The Italian Grand Prix will remain at Monza until 2016 after a deal between Formula 1 supremo Bernie Ecclestone and the historic track's managers.
There had been uncertainty over the circuit's future amid rumours of a new Grand Prix through the streets of Rome.
But Ecclestone has signed off a four-year extension to a contract which was due to expire in 2012.
The Autodromo Nazionale Monza is one of F1's most famous venues, having first hosted the Italian Grand Prix in 1922.
Last year's race was won by Rubens Barrichello, with the Brazilian heading team-mate Jenson Button in a Brawn GP one-two.
The 2010 edition - the 14th in F1's 19-race schedule for this year - takes place on Sunday, 12 September.