A medical student has outed himself as the mystery man who found a multimillion-dollar hidden treasure — coming forward to deny a lawsuit accusing him of hacking another hunter.

“Hey Twitter, it’s been a while. Some personal news: I found the Fenn Treasure,” Jack Stuef wrote Monday of the 10-year hunt for a cache of gold coins and jewelry worth an estimated $2 million to $3 million.

The 32-year-old medical student also spoke to Outside magazine, which said it confirmed his identity with the family of Forrest Fenn, the eccentric Santa Fe art collector behind the hunt, who died in September at age 90.

“I searched for it for two years, and on June 6 of this year, I retrieved the treasure from the place I found it in Wyoming, the same place Forrest hid it 10 years ago. I now own the treasure chest,” Stuef also wrote on Medium.

He insisted he had wanted to remain anonymous for his family’s safety, but came forward because he was about to be identified in a “meritless lawsuit” in New Mexico that he called an “abuse of the court system.”

That was brought by a Chicago real estate attorney named Barbara Andersen who has accused the finder of hacking her texts and emails to steal the treasure that is rightly hers, Outside said.

Stuef insisted he had never heard of Anderson before, let alone hacked her. He also maintained that the treasure was found in Wyoming, not New Mexico as the lawsuit alleges.

“I am the legitimate finder and owner of the treasure, and no person has any remotely valid claim against me,” he wrote on Medium, dismissing the “bizarre, false, baseless, and defamatory allegations” in the suit.

Stuef said that before the suit, he had hoped to remain anonymous “because Forrest and his family endured stalkers, death threats, home invasions, frivolous lawsuits, and a potential kidnapping — all at the hands of people with delusions related to his treasure.”

“I don’t want those things to happen to me and my family,” he wrote.

“Since finding the treasure, I moved to a more secure building with guards and multiple levels of security, and I have taken appropriate measures to protect myself,” he wrote.

The treasure is now in “a secure location in New Mexico,” he said, writing, “It will remain there until I sell it.”

He called the guaranteed windfall from when it finally is sold a “lifeline” allowing him to stop worrying about student debt and potentially switching careers and becoming an investor.

Despite not yet cashing in, Stuef said he has had at least one payday — claiming he got paid the $10,000 that a disbeliever had bet for someone to prove the treasure had been real.

Although he came forward, Stuef refused to reveal another major mystery — exactly where he found the treasure.

“Doing that, I think, is a death sentence to this special place,” he said, fearing it would be a pilgrimage site for Fenn devotees — as well as those hoping to find treasure he may have missed.

“It’s not an appropriate place to become a tourist destination. It has huge meaning to Forrest, and I don’t want to see it destroyed,” Stuef told Outside.

He gave a hint that there may still be treasure out there — admitting that he never found an emerald ring that Fenn said should have been there.