Just a week after Djokovic had beaten him in the final of the Madrid Open, the Scot gained his revenge over the world number one in another claycourt final with a superb 6-3 6-3 win in one hour and 35 minutes.
Djokovic was not at his best and in a grumpy mood, complaining on several occasions to the umpire about the slippery court surface on a damp day at the Foro Italico.
Rome Masters: Murray cruises into Italian Open final
Yet the defeat, just his third of the entire season, could not be totally put down to hints of weariness from Djokovic after a tough week's work as he told Murray afterwards: "Well done Andy, you were just too good."
It was an emphatic triumph, after finishing runner-up in Madrid and making the semi-finals in Monte Carlo, to convince Murray that he now must have his best shot yet at winning the French Open, which begins next weekend.
In the week that Murray announced an amicable split from coach Amelie Mauresmo, this was only the second time in their last 14 meetings that he had beaten Djokovic and it was his first victory in their six duels on clay.
No major titles led to Mauresmo split: Murray
The light rain in the Italian capital really seemed to dampen Djokovic's spirit as he complained to the umpire that it was "too dangerous" to continue but his appeals were brushed aside by the official, Damian Steiner.
Murray was aggressive from the start, taking command in the light drizzle, and even when Djokovic appeared to be fighting back in the second set, Murray saved break points in successive games to begin imposing himself again.
Record-breaking Djokovic wins Madrid Masters
At the end, Djokovic capitulated with surprising swiftness, hitting a couple of errant forehands and a double fault at 3-5 down before Murray conjured up one inspirational backhand winner from way beyond the tramlines to lift the title.
No British man had won the Italian title since Patrick Hughes in 1931 and the triumph will put Murray into the world number two spot on Monday ahead of Roger Federer before the second of the season's slams starts in Paris.
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