A fearless Trump supporter used giant suction cups to climb the side of The Donald’s flagship Midtown high-rise Wednesday — playing cat-and-mouse with NYPD cops as he slowly scaled up 21 floors.

The daredevil, whom sources identified as a Virginia man named Stephen Rogata, began his ascent from street level at about 2:45 p.m. and made it more than 200 feet up the glassy Trump Tower before getting yanked through a window at 6:35 p.m. The man had multiple IDs on him, and police officials have not yet formally confirmed his name.

Cops tried to talk him down throughout his ascent, but he simply shouted back at the officers and continued his upward slog — accidentally dropping a MacBook laptop at one point and shouting, “F–k!”

The officers cut out air-conditioning vents and a window, removed several large panes — and even lowered a scaffold to block his path.

Finally, a burly officer waiting at a large window dragged him inside as he kicked his legs.

“They tied themselves in the building and were waiting for him to get in arm’s length and had instructions to grab his arm and backpack, which they did,” a police source said.

“He was tied into the building on a harness, so even if he broke away, he would not have fallen.”

In a video posted a day earlier to YouTube, a man claiming to be the climber professed his support for Donald Trump’s campaign for the White House.

“The reason I climbed your tower was to get your attention,” the man says. “If I had sought this via conventional means, I would be much less likely to have success, because you are a busy man with many responsibilities.”

The clip was under the name “Leven Thumps,” a fictional character in children’s fantasy novels.

Trump was campaigning in West Virginia at the time.

He later tweeted, “Great job today by the NYPD in protecting the people and saving the climber.”

Trump Organization executive Michael Cohen said that despite the climber’s support, “This man performed a ridiculous and dangerous stunt.”

Additional reporting by Larry Celona