Billionaire GOP businessman Ken Langone said he’s backing Gov. Andrew Cuomo for re-election even though he’s upset with his comment that America “was never that great.”

“I’m disappointed with the remark he made last week. This is the greatest country in the world!” Langone told The Post.

Langone also said Cuomo goofed when he walked backed the remark as “inartful” without admitting he was wrong.

“I think he should apologize. He was 100 percent wrong,” said Langone.

Dutchesss County Executive Marc Molinaro is the Republican challenging Cuomo — but Langone said he’s never heard of him.

The financier, who founded Home Depot, said it’s inevitable that Cuomo will prevail in both the Sept. 13 Democratic primary and Nov. 6 general election.

“I gave Cuomo money this time around. So what? He’s going to be the governor again,” he said.

Langone donated $50,000 to Cuomo’s campaign in 2016 and 2017.

“For the most part, he’s done a good job,” the businessman said.

“Will I vote for him. Probably. Why wouldn’t I . . . Who are the Republicans putting up?”

Still, he called on the governor to re-consider costly, anti-business laws, such as paid family leave for bereavement.

“He’s got to stop this. This is crazy,” Langone said.

“We’re going to be like France. People are going to leave the state. It’s awfully easy to get to Florida. He’s got to stop this erosion for the state.”