President-elect Donald Trump sent his eldest son to Greenland on Tuesday as part of his efforts to make it part of the US — despite repeated denials it is for sale.

The incoming president addressed his plans for the fact-finding trip just before Donald Trump Jr. posted photos of his arrival on the mineral-rich Arctic island early Tuesday.

“I am hearing that the people of Greenland are ‘MAGA,’” Trump posted late Monday on his Truth Social along with a clip of a local man putting on a “Make America Great Again” hat and asking him to “buy us.”

He said his son and “various representatives” would “visit some of the most magnificent areas and sights” on the island that is an autonomous territory of Denmark.

“Greenland is an incredible place, and the people will benefit tremendously if, and when, it becomes part of our Nation.

“We will protect it, and cherish it, from a very vicious outside World. MAKE GREENLAND GREAT AGAIN!”

Don Jr. posted a short video of his approach to Greenland early Tuesday — with a bobblehead toy of his dad as an action figure in the cockpit.

“Greenland coming in hot… well, actually, really really cold!!!!” he quipped, before adding photos soon after landing, gushing: “Greenland is beautiful!!!”

While his group is visiting the strategically located island, it will not meet any government officials, sources familiar with the trip told The Post.

The Greenlander asking Trump to “buy us” in the video Trump shared also said in the clip: “We don’t want to be colonized by the Danish government anymore.”

The incoming president has voiced his desire for the US to attain “ownership” of Greenland in an effort to expand America’s territory to include the Denmark-owned island in what he called in his previous term a “large real estate deal.”

However, as rhetoric around the island has heated up, Greenland Prime Minister Múte Egede has asserted that the mineral-rich land is “not for sale and will never be for sale.”

Egede said in his New Year’s speech that the island is seeking independence from the Kingdom of Denmark as part of a movement to remove its “shackles of colonialism.

“It is about time that we ourselves take a step and shape our future, also with regard to who we will cooperate closely with and who our trading partners will be,” the PM said in the weeks after Trump’s threats.

Denmark’s King Frederik has also appeared to reject Trump’s possible Greenland grab by changing the country’s coat of arms to feature the polar bear symbol representing Greenland and the Faroe Islands more prominently, according to the Independent.

Trump has said that US ownership and control of Greenland, which is home to some 56,000 mostly Inuit residents, is an “absolute necessity.”

Sources close to the president told The Post he is “100% serious’’ not only about acquiring Greenland but reacquiring the Panama Canal as US territory as part of his America-first strategy to counter China and Russia.

The acquisition of Greenland would be the largest land addition in American history — surpassing the 1803 Louisiana Purchase, which nearly doubled the size of the United States at the time.