In an abrupt about-face, the de Blasio administration on Thursday pulled back a plan to ban foreign flags in city parks “until further review.”

The announcement came a day after The Post disclosed that Arthur Piccolo, president of the Bowling Green Association, had been notified he would no longer be allowed to commemorate events with foreign flags on his small patch of green, as he has for more than two decades.

“This is complete hypocrisy on the part of de Blasio and his administration that professes to be the champion of immigrant rights,” Piccolo fumed on Wednesday.

Piccolo learned of the sudden ban — that the Parks Department quietly implemented in March — when he tried to get a routine permit to raise the Mexican colors for Cinco de Mayo.

“There is a risk that hoisting a foreign flag on a City-owned flagpole could be interpreted as ‘government speech,’ ” Parks lawyer David Lepard wrote in an email to Piccolo explaining the new policy.

But on Thursday, City Hall switched gears.

“When Parks implemented this policy, they were following guidance pertaining to City buildings,” spokeswoman Jane Meyer wrote in an email.

“We are putting implementation on hold until further review from the Law Department, partner agencies and City Hall. The Mexican flag in question will be permitted.”

“That’s fabulous,” Piccolo said, when notified of the reversal.

“This never should have happened in the first place because it’s absolutely wrong. It’s a violation of our rights as Americans and New Yorkers and it’s a blatant misuse of government power.”

Leaders of Italian, Greek and Jewish organizations who’d flown their international colors at Bowling Green for years expressed dismay at the ban before it was put on hold.

“I think it’s a shame,” said Dr. Joseph Scelsa, president of Little Italy’s Italian-American Museum. “Unfortunately the city seems to be taking away more and more traditions.”

Council Member Jimmy Van Bramer also criticized the ban.

“We’re the most diverse City in the world where just everyone takes great pride in the immigrant experience of their families. For some that journey took place hundreds of years ago, for others that journey took place last week. Our City also welcomes international visitors every day. This policy makes no sense and sends the wrong message.”