This was the Frenchman's 14th career win, his third for Kawasaki, the second Kawasaki win of 2012 after the Australian victory of Kenan Sofuoglu meaning Kawasaki is leading the manufacturers' championship by 14 points.
Britain Sam Lowes and his PTR team-mate Ronan Quarmby rounded out the podium.
"This is a good track for me, I love Italy and we have had a great start to the season," Foret enthused. "The team worked very hard for me and gave me an excellent bike. It has not been the easiest weekend and I was sixth in qualifying, but it ended very well for me, the team and all of us," the Intermoto Step Kawasaki rider concluded.
Pole position rider Sam Lowes tried everything he knew on the final few laps of the FIM Supersport World Championship race at Imola to get past Foret, but he could not get into a position to make his final move. In finishing second by only 0.574s Lowes promoted himself to second in the championship, on a day when lots of top names and new talents experienced some vastly differing results.
"That was a tough race. We changed the bike a bit for today and the team gave me a bike that as capable of winning," Lowes said.
"Fabien was great last year at this track and this year he did not put a foot wrong. I nearly matched his times towards the end, but I could not go any faster to catch him, but fair play to all of us, and I am glad to get my first podium of the year. I made a good start from pole and had to control the race from the front. Fabien is a fantastic rider and he's always good at this circuit so well done to him for the win.
"We're getting closer and I feel good and confident. I didn't make any mistakes in the race and the bike and tyres were working well until the end. We're now second in the championship so I'm really looking forward to Assen," the Bogdanka PTR Honda rider concluded.