The Spaniard was beaten to the championship by 3 points by Red Bull's Sebastian Vettel, but a British magazine asked the bosses of the 12 teams this year to name the standout performer.
"Well, Alonso got a resounding vote: (he) racked up 269 points, a whole 71 more than Vettel," Ferrari said in a report posted on its official website.
"Apart from (Stefano) Domenicali, seven other team principals chose Alonso as the best driver of the season," the famous Italian team added.
Alonso said: "I was pleased to be chosen by the team principals as the best driver of 2012.
"Of course, next year I would prefer to win the title, happy to leave this prestigious yet idealistic award to one of my peers."