A retired NYPD detective wants to help the family of a 3-year-old boy allegedly beaten to death by his mother’s boyfriend — and is offering free burial for the baby, whose remains are still in the morgue.

Daniel Austin Jr., president of Lutheran All Faiths Cemetery, said Friday that he wants to offer little Jaden Jordan’s family a final resting place for the tyke at the cemetery in Middle Village, Queens.

“I’m going to give this child whatever he needs,” said Austin, who retired after 20 years as a detective. “He did nothing to anyone. He was supposed to outlive all of us.”

Jaden was beaten by his mother’s live-in boyfriend on Nov. 28 and admitted to the hospital with a lacerated liver and kidney and a fractured skull. He was in a coma until Dec. 3 when he was removed from life support.

Salvatore Lucchesse, the mom’s live-in boyfriend, is jailed on Rikers Island and facing five counts of assault. The charges could be upgraded.

A Go Fund Me page created Wednesday on behalf of Jaden’s mother, Raven Haynes, has raised $3,210 “to help provide the family with more options in its quest to memorialize and honor him,” a post on the fundraising website reads.