Conservative scribe Ann Coulter cribbed liberally in her latest book, “Godless,” according to a plagiarism expert.

John Barrie, the creator of a leading plagiarism-recognition system, claimed he found at least three instances of what he calls “textbook plagiarism” in the leggy blond pundit’s “Godless: the Church of Liberalism” after he ran the book’s text through the company’s digital iThenticate program.

He also says he discovered verbatim lifts in Coulter’s weekly column, which is syndicated to more than 100 newspapers, including the Fort Lauderdale (Fla.) Sun-Sentinel and Augusta (Ga.) Chronicle.

Barrie, CEO of iParadigms, told The Post that one 25-word passage from the “Godless” chapter titled “The Holiest Sacrament: Abortion” appears to have been lifted nearly word for word from Planned Parenthood literature published at least 18 months before Coulter’s 281-page book was released.

A separate, 24-word string from the chapter “The Creation Myth” appeared about a year earlier in the San Francisco Chronicle with just one word change – “stacked” was changed to “piled.”

Another 33-word passage that appears five pages into “Godless” allegedly comes from a 1999 article in the Portland (Maine) Press Herald.

Meanwhile, many of the 344 citations Coulter includes in “Godless” “are very misleading,” said Barrie, who holds a Ph.D. from the University of California at Berkeley, where he specialized in pattern recognition.

“They’re used purely to try and give the book a higher level of credibility – as if it’s an academic work. But her sloppiness in failing to properly attribute many other passages strips it of nearly all its academic merits,” he told The Post.

Barrie says he also ran Coulter’s Universal Press columns from the past 12 months through iThenticate and found similar patterns of cribbing.

Her Aug. 3, 2005, column, “Read My Lips: No New Liberals,” about U.S. Supreme Court Justice David Souter, includes six passages, ranging from 10 to 48 words each, that appeared 15 years earlier in the same order in an L.A. Times article, headlined “Liberals Leery as New Clues Surface on Souter’s Views.”

But nowhere in that column does she mention the L.A. Times or the story’s writer, David G. Savage.

Her June 29, 2005, column, “Thou Shalt Not Commit Religion,” incorporates 10 facts on National Endowment for the Arts-funded work that originally appeared in the same order in a 1991 Heritage Foundation report, “The National Endowment for the Arts: Misusing Taxpayers’ Money.” But again, the Heritage Foundation isn’t credited.

“Just as Coulter plays free and loose with her citations in ‘Godless,’ she obviously does the same in her columns,” Barrie said.

Coulter did not respond to requests for comment.

Additional reporting by Susannah Cahalan

SEEING DOUBLE

A plagiarism-recognition expert cites the following passages in Ann Coulter’s book “Godless” as examples of possible pilfering:

1. COULTER WRITES: “And as the president of the Mississippi Baptist Convention, Pickering presided over a meeting where the convention adopted a resolution calling for legislation to outlaw abortion.”

– Page 95

ORIGINAL: “As the president of the Mississippi Baptist Convention, Judge Pickering presided over a 1984 meeting where the convention adopted a resolution calling for legislation to outlaw abortion.”

– “About Planned Parenthood” pamphlet, 2004

2. COULTER WRITES: “It’s also possible that galactic ruler Xenu brought billions of people to Earth 75 million years ago, piled them around volcanoes, and blew them up with hydrogen bombs, sending their souls flying every which way until they landed on the bodies of living humans, where they still invisibly reside today – as Scientology’s L. Ron Hubbard claimed.”

– Page 209

ORIGINAL: “Yes, according to Scientology doctrine, a galactic ruler named Xenu brought billions of people to Earth 75 million years ago, stacked them around volcanoes and blew them up with hydrogen bombs. Their souls then clustered together and stuck to the bodies of the living.”

– San Francisco Chronicle, July 3, 2005

3. COULTER WRITES: “The massive Dickey-Lincoln Dam, a $227 million hydroelectric project proposed on upper St. John River in Maine, was halted by the discovery of the Furbish lousewort, a plant previously believed to be extinct.”

– Page 5

ORIGINAL: “1976: The massive Dickey-Lincoln Dam, a $ 227 million hydroelectric project proposed on upper St. John River, is halted by the discovery of the Furbish lousewort, a plant believed to be extinct.”

– Portland Press Herald (Maine), Dec. 12, 1999