City Councilman Joseph Borelli says he was “physically blocked” from marching in the Staten Island St. Patrick’s Day Parade on Sunday — because he was wearing a tiny pride pin.

Borelli, a Staten Island Republican, says he was wearing the rainbow lapel pin on his jacket when the parade marshalls told him he wouldn’t be allowed to march, the Staten Island Advance reported.

“They physically blocked me,” said Borelli, who showed up with his wife and their two sons.

“They called police on me. I spoke to a sergeant and was not going to make the life of our cops more complicated to prove a point,” he said. “I didn’t come looking for an argument. My friends handed a pin to me. I really didn’t think it was a big affront to the Irish.”

The controversial annual parade — the only St. Patrick’s march in the five boroughs that has banned gay groups — came under more fire over the weekend when organizers banned a local beauty queen after she came out as bisexual to The Post on Saturday.

Miss Staten Island Madison L’Insalata, 23, said she planned to ride the parade route in a red Corvette until parade organizer Larry Cummings abruptly banned her Saturday night — hours after she came out.

Last year, some local and state pols boycotted the parade over its continued refusal to allow the Staten Island Pride Center to hit the parade route under its own banner.

Borelli told the Advance on Sunday that Carol Bullock, the pride center’s executive director, gave him the rainbow pin he wore to the parade, saying he supports the center.

He noted that the center marches in the Manhattan parade every year “without controversy.”

Not so on his home turf, Borelli said.

“Tough guys couldn’t contend with a half-inch pin,” he said.