Prominent women’s rights activists and elected officials are urging the Manhattan Democratic Party to scuttle a sitting judge’s nomination to a prestigious judicial post at its delegates’ convention Sunday — because of an abortion controversy.

Opponents of acting Supreme Court Justice Lori Sattler say she is unfit for elevation to a permanent seat in the court because she allowed evidence of a woman’s abortion to be submitted in a custody case back in 2013.

A letter of opposition to Sattler’s nomination was submitted to delegates by Sonia Ossorio, head of the NY chapter of the National Organization for Women.

The letter was co-signed by Public Advocate Letitia James, Manhattan Borough President Gale Brewer, Congressman Adriano Espaillat, and Assemblyman Robert Rodriguez.

Also signing the opposition letter were three council members — Margaret Chin, Rosie Mendez and Helen Rosenthal — six Democratic district leaders and activists including Allan Roskoff of the Jim Owles Democratic Club.

The Sept. 20 letter accuses Sattler of having a “double standard” and of disrespecting and violating women’s rights in her courtroom.

“As one example, in a 2013 custody case, Judge Sattler allowed a woman’s abortion to come under scrutiny in her courtroom. The abortion was not probative of this woman’s fitness as a mother,” the letter said.

“Yet the mother was forced to answer many intimate questions about her medical procedure and sex life and Judge Sattler allowed to it continue for two full days of court proceedings.”

The opponents continued: “Outdated and uninformed views that hold women to a double standard do not belong in a 21st century courtroom. We have an obligation to speak out against misogyny and injustice in our courts.

“Judge Sattler has failed to protect the rights of women and is not fit to sit in judgment of other women who come before her. We implore you to stand with women everywhere and deem Judge Lori Sattler unfit to be elevated to a permanent status on the State Supreme court.”

The delegates’ convention is scheduled for 4 p.m. at the SVA Theatre in Chelsea.

The Post has previously reported on Sattler’s controversial decision — in the custody case of Manuel Mehos versus Lisa Mehos — to allow evidence about the woman’s post divorce abortion.

In 2013 the judge said she used the evidence related to Lisa Mehos’ medical records “purely for credibility issues.”

The mom, who testified that the abortion was the result of a one-night stand with a friend six months after her divorce, ultimately lost custody of her two kids.

The judge based her final decision on the finding that the mom was addicted to pills and alcohol, not that she had an abortion.

Her adviser, ex-Sheldon Silver aide Joanna Saccone, had previously noted that an appeals court upheld the ruling.