Big Apple first lady Chirlane McCray is seriously considering a run for Brooklyn borough president, Mayor Bill de Blasio said this week.

“She has gotten to a point where she has a serious interest in a particular office of Brooklyn borough president,” de Blasio said Wednesday on “Good Day New York.”

“But she’s not made the decision. She could go either way. She’ll make that decision in due time,” the mayor added.

McCray told PIX 11 on Wednesday that she is still “thinking” about a run.

“There is no announcement, no plan — but a lot of people are talking, though,” she said.

McCray has come under fire from good-government groups and would-be political rivals for using city resources to boost her profile in the borough ahead of a potential run.

De Blasio bristled when “Good Day” co-host Lori Stokes asked about the controversy.

“There is a consensus now that perhaps you’re propping her up so that she could have–” Stokes said before the mayor cut her off.

“When you say people think there’s a consensus or whatever, I just don’t accept that you or anyone else can make that judgment. I really don’t. There’s no consensus,” de Blasio snapped.

He also claimed that McCray, who has been eyeing a run at elected office since at least 2018, enjoys widespread support for her embattled $1 billion mental health plan ThriveNYC.

“Wherever Chirlane goes, people thank her for putting mental health front and center,” de Blasio said.

On Tuesday, city Comptroller Scott Stringer put ThriveNYC on his annual “watch list” of city agencies and entities with suspect spending.

“If we are going to construct a program that works, it cannot be a political program. It has to be a program that has real results and a way to measure effectiveness,” Stringer said in announcing the listing.