The politically incorrect professor on leave since his NYU colleagues griped about his “incivility” has been promoted — and his fellow liberal-studies profs were lectured about their conduct.

Michael Rectenwald, 57, was bumped from assistant professor to full professor on Monday, just days after he was placed on paid leave. The promotion comes with an 18 percent raise to $80,000, a source said.

“I’m very relieved,” the liberal-studies professor told The Post. “I was worried the administration might use my views against me.”

Rectenwald’s exit came on Oct. 26, two days after he outed himself as the “Deplorable NYU Prof,” an undercover Twitter profile he used to argue against college trends like “safe spaces” and “trigger warnings.”

His unmasking prompted a 12-person committee calling itself the Liberal Studies Diversity, Equity and Inclusion Working Group to publish a letter in the student paper charging that Rectenwald was “guilty of illogic and incivility.”

The same day, he was summoned to a meeting with the dean, where it was suggested he take a paid leave, Rectenwald said.

“I thought my career was over,” he told The Post.

But amid public outcry following The Post’s report on his exit, NYU e-mailed Rectenwald last week to inform him that his application for a full professorship had been approved. He had applied six months ago.

On Wednesday, liberal- studies dean Fred Schwarzbach sent a strongly worded e-mail to department faculty reminding them to be respectful of opposing views.

One of the program’s “core values,” he wrote, is “the importance of the free and open exchange of different views, even those with which most of us disagree.”

His promotion came along with 18 other faculty promotions and was “simply the normal course of business,” said NYU spokesman James Devitt.

The professor continues to feel “shunned” by his colleagues, who he said had “defriended me by the dozens on Facebook.”

He hopes for a reconciliation.

“I’d like to have some understanding reached between myself, the dean and the people who felt the need to attack me for no reason,” he said. “Rather than write off my views, they could actually listen to what I have to say.”