Nadal's celebration was restrained ― throwing his arms skywards and turning to his entourage including coach and fellow Mallorcan Carlos Moya and his uncle Toni who stood down a year ago when his nephew Nadal reached La Decima.
Sunday's result marks the sixth consecutive Grand Slam won by either Nadal or 20-time major champion Roger Federer.
The victory also allowed the 32-year-old Spaniard to hold onto the No. 1 ranking.
Dejected but gracious in defeat, Thiem told Nadal and the Philippe Chatrier court that his extended record for the most men's Grand Slam wins at any tournament was "one of the most awesome things in sport".
He said it was because he had started the clay-court season with "some doubts" before going on to win a record-extending 11th title at Roland Garros.
Thiem's fighting spirit was evident in abundance - he continued to put pressure on Nadal through his return game, while consistently scrapping to stave off perilous positions on his own serve - but ultimately the Spaniard's quality and, often, his sheer force of will, won the day.
Up in the stands, Nadal's uncle Toni, his former coach, was nervous, too, "because I thought maybe we can have a problem", he said.
Roland-Garros hosted a final that told two stories, with Nadal easing to victory after surrendering only one set all tournament long, while Thiem looked noticeably short on stamina, particularly in the later stages of Sunday's decider.
Change is coming in the men's game: Alexander Zverev is 21 and ranked No. 3 after winning the Masters 1000 title in Madrid and pushing Nadal hard in the Italian Open final.
Why? Nadal was 95-0 when capturing the opener on clay in the best of five format.
Mac App Store Getting Major Overhaul in 2018
Actually, apps like Stocks, Voice Memos, News, and Home introduced with MacOS Mojave are versions of iOS apps ported to MacOS . Parents can also set limits, using "Allowances" to allow their children ertain amounts of time on their devices.
The King of Clay has done it again.
Nadal called it "not even a dream" to win his 11 titles in Paris.
He led by two sets plus a break early in the third when the middle finger on his racket-wielding left hand was cramping so badly he couldn't straighten it.
"Unfortunately, he could get destroyed", Bresnik said.
Perhaps. But under so much pressure from Nadal all afternoon, Thiem made mistakes that piled up. He is, after all, the only player to beat Nadal on red clay each of the past two seasons.
Thiem says he is "confident" his first appearance in a Grand Slam final will not be his last. Thiem was not easily cowed down by the Nadal forehand, nor the Popeye-bicep it finished off on.
Thiem began to play better as the set went on, and it was only one break, but he could never earn it back, and Nadal won the second set 6-3.
That was swatted away with Nadal's double-handed backhand, though, and the second set duly went the way of the favourite.
Thus, the task ahead of 24-year-old Austrian Dominic Thiem-competing in his first-ever Grand Slam final-seemed impossible.
Certainly, Nadal played a role.