Nadal threw his arms skywards and turned to his entourage including coach and fellow Mallorcan Carlos Moya and his uncle Toni, who stood down from his coaching role past year after his nephew worn his 10th French crown.
Veteran pair Nadal and Federer have won the past six Grand Slams as their younger rivals struggle to dislodge them at the pinnacle of the game.
The victory also allowed the 32-year-old Spaniard to hold onto the No. 1 ranking.
The muscular Spaniard had won all 10 of his previous Roland Garros finals and although Thiem was the only man to have beaten him on clay over the past two seasons, the Austrian never threatened the claycourt master on Sunday.
It marks Nadal's record-setting 11th Roland Garros crown, a stunning feat.
But at 4-5 Thiem's serve let him down badly, handing Nadal three set points.
"You can win a set, but not a match against Rafa", said Del Potro keen not to over-egg any hint of weakness in Nadal's game.
Rafael Nadal duly collected his 11th French Open title here on Sunday with a brutal, brilliant, resilient and ruthless performance, just as he had done 10 times before. The Argentine ended Nadal's run of 37 consecutive sets in a rain-delayed quarter-final before the Spaniard won the contest upon the resumption on Thursday under glorious blue skies.
Why? Nadal was 95-0 when capturing the opener on clay in the best of five format.
Two breaks later Nadal was in a familiar position, serving for the title, and when another Thiem forehand dropped long, his arms were raised in celebration, yet again.
There was a nervy moment when Nadal called his trainer to the court on several occasions as he appeared to be suffering from cramp in the fingers of his racket hand. "Of course, I have ambition, I have passion for what I am doing, but I never have been insane about all this kind of stuff", Nadal told a news conference.
This was the Austrian's first shot at a Grand Slam and his opponent's vast experience ultimately paid off despite his visible toil and hard work.
And world No 1 Nadal congratulated Halep on her clay court success. Like so numerous pretenders, Thiem just did not have quite the same level of consistency to derail the Spaniard, who ruthlessly targeted his flowing backhand.
The only hiccup was Thiem, his challenge on last legs, fighting off the first four championship points on Nadal's serve in the eighth game.
Thirteen years and 17 Grand Slam titles along, with Nadal aged 32 years and one week, still, nobody has ever said anything any truer.
Thiem put up a good fight in his opening service game of the third set, saving four breakpoints.
Nadal plans to return to Paris in 2019 and try and clinch a 12th title at Roland Garros.
American former player Pam Shriver: Bingo legs eleven Rafael Nadal.