Kate Middleton’s cancer battle is at the center of a wild new conspiracy.

The Princess of Wales, 42, said she was cancerfree in September, six months after she confirmed she was undergoing chemotherapy treatment for her diagnosis.

However, conspiracists are suggesting Middleton may not have had cancer at all.

The theories point to what was said in a resurfaced report from September by Sky News senior royal editor Rhiannon Mills.

Mills, an accredited royal reporter, wrote about Middleton’s announcement that she was cancer free at the time.

“In March the princess confirmed that pre-cancerous cells had been found following abdominal surgery and that she would have to undergo a course of preventative chemotherapy,” said Mills.

The phrase “pre-cancerous cells” created doubt about Middleton’s condition — especially because of Mills’ respected reputation with the British media.

According to the Daily Beast, Mills is a member of the so-called royal rota, a quasi-official group of royal journalists working for British media who frequently cooperate with the palace.

However, the palace never corrected the “pre-cancerous cells” part of Mills’ report, thus giving credence to the theories about Middleton.

A doctor told the Daily Beast, “You either have pre-cancerous cells or you have cancer, the two terms are not interchangeable.”

British commentator Narinder Kaur is among those who have drawn attention to the cancer conspiracy.

Kaur wrote on X, “I don’t know if she had cancer or pre cancer cells. But either way…I’ve been attacked in the most vicious way. Just because I asked why she looked aged. Just THAT.”

The Post has reached out to Kensington Palace for comment.

Middleton announced her diagnosis in March, two months after undergoing “major abdominal surgery” at the London Clinic.

During the period that Middleton was absent from public life post-surgery, several conspiracy theories quickly took root — and only intensified after she posted a heavily edited UK Mother’s Day image that received a “kill notice” from major press agencies.

In her March 22 videotaped statement, a frail-looking Middleton said, “The surgery was successful. However, tests after the operation found cancer had been present.”

“My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment,” the mother of three continued, adding that the diagnosis “came as a huge shock” to her.

The princess did not reveal what type of cancer she was battling at the time.

Middleton mostly stayed out of the spotlight while she was going through chemo. She made rare public appearances at the Trooping the Colour ceremony in June and the men’s final at Wimbledon in July.

On Sept. 9, Middleton said on X that she was “cancer free.”

“Doing what I can to stay cancer free is now my focus. Although I have finished chemotherapy, my path to healing and full recovery is long and I must continue to take each day as it comes,” she said.

The major health update also came with rare footage of the future queen with husband Prince William, 42, and their three children – Prince George, 11, Charlotte, 9, and Prince Louis, 6.

Middleton has slowly been returning to the public eye. She undertook her first post-chemo public appearance last month, traveling with William to Southport, England, where they met the parents of the victims in a mass stabbing attack on July 29 at a Taylor Swift-themed dance class.

This past weekend, Middleton attended the two-day Festival of Remembrance ceremony at Royal Albert Hall in London.

William recently told reporters his wife “will be doing more” royal engagements in 2025.

The prince also talked about the “brutal” year he and his family have endured, which involved both his wife and his father, King Charles III, being diagnosed with cancer.

In that same chat with reporters, William said that Kate is “doing well” after completing chemo.