Jeremy Renner’s ex-wife claims the actor bit their 4-year-old daughter, leaving a bruise on her shoulder, according to court documents obtained by The Post on Tuesday.

“The Avengers” star’s ex-spouse, Sonni Pacheco, 28, say she spotted the mark on their now-6-year-old, Ava, in April 2017 and that the girl told her, “Daddy bit me,” according to the papers, which were filed publicly in the Superior Court of California in Los Angeles last week.

“It’s OK Mommy, it was an accident. I told him to never do it again,” Ava said, according to the docs.

“Later, [Ava] explained that the bite happened when [Renner] was being mean and yelling,” the filing alleged.

In e-mails included in the filing, Renner, 48, denied the bruise came from him, saying Ava’s seat belt “pinched” her, the documents say.

Pacheco then challenged him, writing, “When … putting some ointment on her owie, Ava told me you bit her there,” the papers say.

Renner allegedly replied, “Ha. No. We do a nibble game called Ava burrito. Haha. But not a bite. Tell her she’s spicy. And the game ensues. Haha. Nibble game are fake nibbles.”

Renner’s rep Tuesday called Pacheco’s claims “categorically not true and another straight-out character assassination made by Ms. Pacheco and her attorney.”

The rep added in an e-mailed statement to The Post that after Pacheco claims the incident took place, she still “never sought a restraining order or never withheld Mr. Renner’s 50% custody time.”

The ex-wife’s filing appears to be in response to documents filed by Renner in which he claimed Pacheco is unstable and has been trying to smear him with lies, including by pretending to be worried that Renner had possibly assaulted their daughter.

The former couple has been going through a bitter custody battle, with Pacheco previously accusing Renner of shoving a gun into her mouth and threatening to kill her last November while drunk and high on cocaine.

He came back swinging with allegations that his ex is sex-obsessed and sent nude photos of him to their custody evaluator.

Pacheco, a Canadian model and actress, filed to divorce Renner in December 2014, just 10 months after they secretly got married. They originally agreed on shared custody of Ava in April 2015.

Pacheco is now requesting sole custody.