WASHINGTON — Vice President JD Vance has called his resurfaced screed against “childless cat ladies” that went viral during the 2024 campaign “one of the dumbest things I ever said,” according to his forthcoming memoir.

In “Communion,” out Tuesday, Vance takes responsibility for the “boneheaded comment” but notes that it succeeded in provoking people, as intended.

“One of the dumbest things I ever said came when I argued that ‘childless cat ladies’ across the Democrat Party were running our country into the ground,” Vance writes in an excerpt first reported by NBC News.

“The comment caused two firestorms: the first when I made it, the second years later during a political campaign,” he also says. “It was a boneheaded comment, intentionally (and successfully) provocative rather than illuminating.”

“I could have made that point much more effectively, and with the benefit of showing a little charity to the many Americans who—for some reasons beyond their control— don’t have children,” the Roman Catholic convert goes on.

“When I consider the Church’s admonition to respect the dignity of every life, this was a clear moment where I failed.”

Vance wrote the reflection in a chapter grappling with the “political unpopularity” of advocating against legalizing abortion as a Christian politician.

The future vice president was a guest on Fox News Channel’s “Tucker Carlson Tonight” in 2021 when he first made the remark aimed at Vice President Kamala Harris.

“We are effectively run in this country — via the Democrat [Party], via our corporate oligarchs — by a bunch of childless cat ladies who are miserable at their own lives and the choices that they’ve made, and so they want to make the rest of the country miserable too,” Vance told Carlson.

“If you look at Kamala Harris, Pete Buttigieg, AOC, the entire future of the Democrats is controlled by people without children.”

The comments resurfaced three years later, after Harris became the Democratic nominee to replace then-President Joe Biden and Vance was chosen as Donald Trump’s nominee on the Republican ticket.

In August 2024, Vance told NBC News’ “Meet The Press” that he has “a lot of regrets … but making a joke three years ago is not at the top 10 of the list.”

“The reality is, he made a quip in service of making a point that he wanted to make that was substantive,” Vance’s wife Usha told Fox News that same month.

The future second lady added: “What he was really saying is that it can be really hard to be a parent in this country — and sometimes our policies are designed in a way that make it even harder.”

One month later, pop superstar Taylor Swift dubbed herself a “Childless Cat Lady” as a badge of honor when endorsing Harris and her running mate, Minnesota Gov. Tim Walz.

Vance’s book focuses on his journey to Catholicism, and he writes in the acknowledgements that Usha was one of its most “vicious” editors.

“There is at least a little irony in the fact that my non-Christian wife helped lead me back to my own Christian faith, and then made it possible for me to discuss the journey on paper,” Vance writes. “The Lord works in mysterious ways, indeed.”

The veep, who was elected to the US Senate from Ohio in 2022, previously authored the bestselling memoir, “Hillbilly Elegy.”

The 2016 book had explored Vance’s roots in southeastern Ohio, moving from a reflection on his family life in a blighted steel mill town to his military service and time at Yale Law School.