Even felons and alleged murderers can get a taste of Thanksgiving while behind bars, including accused UnitedHealthcare CEO slayer Luigi Mangione, convicted sex fiend Sean “Diddy” Combs and Jeffrey Epstein’s madame Ghislaine Maxwell.

Music and fashion mogul Combs is planning “a real holiday meal” for himself and fellow inmates at a New Jersey low-security federal prison Thursday for “a moment of dignity and normalcy,” his rep told The Post.

And at other federal facilities, notable figures behind bars will still have the option to dine on turkey and other Thanksgiving staples as at least two other lockups have holiday themed options on the menu Thursday, The Post has learned.

The Garden State’s Federal Correctional Institution, Fort Dix — where Combs is serving his 4-year sentence for transporting prostitutes — is offering a roast turkey, cornbread dressing, baked sweet potato, mashed potatoes, chicken gravy, whole wheat bread and fruit or holiday dessert, Fort Dix confirmed.

But the Bad Boy Records founder has a more robust meal planned for himself and his prison mates, his spokesperson Juda Engelmayer claimed.

“Sean Combs is helping organize a Thanksgiving dinner for the men inside,” Engelmayer said. “Instead of the usual prison fare, they’ll share a real holiday meal — turkey, stuffing, and the kind of food that signals a moment of dignity and normalcy. 

“More importantly, they’ll sit together, talk, and reflect on the people and experiences they’re most thankful for.”

The rep said Combs “will help lead the conversation, using the dinner as a way to bring the group together, encourage connection, and create a sense of warmth and community in a place that rarely offers it.”

“It’s his way of giving back to the men he’s incarcerated with and helping everyone feel a little more human for the holiday.”

The Bureau of Prisons didn’t immediately confirm the Diddy-funded party.

Meanwhile, Brooklyn’s notorious Metropolitan Detention Center — which houses Mangione, accused sex-dungeon torturer Howard Rubin, and accused sex-traffickers Tal and Oren Alexander — is serving up roast turkey, mashed potatoes and brown gravy, the facility confirmed to The Post.

And Texas’ minimum-security Federal Prison Camp Bryan — where Maxwell, “Real Housewives of Salt Lake City” scammer Jen Shah, and Theranos fraudster Elizabeth Holmes are cooling their heels for their sentences — is offering the most Thanksgiving options, including cornbread dressing, turkey, ham, mashed potatoes, green beans, dinner rolls, cranberry sauce, gravy, and an assortment of pies, that facility confirmed.

All of the facilities are also providing non-meat protein dishes like veggie stir fry, tofu and soy chicken and veggies.

Both Fort Dix and MDC’s holiday-inspired meals are slated for lunch time. It wasn’t immediately clear at what meal FPC Bryan would serve the Thanksgiving food.

Mangione, 27, is awaiting trial on both federal and state charges in the Sunset Park lockup tied to the slaying of health care honcho Brian Thompson in Manhattan on Dec. 4. He’s pleaded not guilty and could face the death penalty if convicted of the federal charges.

He’s been held in the Brooklyn federal facility, which has seen nightmarish conditions in the past like persistent power outages and maggot-infested food, since he was arrested at a McDonald’s in Pennsylvania and transferred back to the Big Apple to face murder cases.

The Alexander brothers are also in the Sunset Park facility as they await trial on charges they used their wealth and prestige to drug and rape dozens of women for more than a decade.

And Howard Rubin, a former NYC financier with ties to George Soros, is also being held there since his September arrest for allegedly torturing women in his Midtown penthouse-turned-BDSM sex dungeon.

A slew of other notorious figures have previously been kept at MDC pending their trials, including Maxwell, R. Kelly, and convicted crypto fraudster Sam Bankman-Fried. All three have since been transferred to other federal prisons to serve out their terms.

Combs, 56, is serving out his 50-month term at the Garden State facility until his current scheduled release on June 4, 2028. He was convicted in July of two counts of transportation to engage in prostitution but acquitted on more serious sex-trafficking charges at the bombshell trial accusing him of forcing women to get high and have sex with male prostitutes.

Former “Real Housewives of New Jersey” star Joe Giudice also spent his 41-month sentence at Fort Dix for a 2014 federal fraud conviction.

Meanwhile, Maxwell, Shah and Holmes are at the lush Texas prison camp, nicknamed “Club Fed” for several amenities it reportedly offers like service dog training courses, a full gym, yoga classes, music programs, and social and cultural events.

Last month, Maxwell, 63, lost her bid to have the Supreme Court review her appeal of a conviction for grooming and sexually abusing young women at Epstein’s behest. She is serving a 20-year term.

Shah, 52, is also at the cushy federal lockup in the Lone Star State serving out a 6 1/2-year penalty for a years-long telemarketing scam that targeted elderly Americans. She’s slated to be released on Dec. 10 in time to return home for the winter holidays.

Holmes, 41, the disgraced Theranos CEO, was convicted of fraud in 2022 for intentionally misleading investors about her company’s blood-testing technology capabilities. The one-time Silicon Valley darling was hit with an 11-year-and-three-month term.