Kooky fringe Democratic presidential candidate Marianne Williamson apparently got duped by a fake news article Monday when she claimed that President Trump had pardoned dead cult leader Charles Manson.

“There is something deeply sinister about Trump pardoning Charles Manson, even posthumously. Dog whistles of the very worst possible kind,” the also-ran tweeted at 12:53 a.m.

Except that didn’t actually happen — and netizens were quick to point out Williamson’s blunder.

“This never happened, you nut,” one user responded.

“Is this something you deciphered at the Vortex in Sedona?” chided another, referring to the self-help author’s fascination with spiritualist mumbo-jumbo.

An article claiming Trump pardoned the swastika-foreheaded fiend appeared on satire website moronmajority.com on Nov. 16 and was picked up by lefty blog site Daily Kos — leading some Twitter users to speculate that Williamson saw the article but failed to practice a little self-reflection before smashing the tweet button.

She deleted the post less than an hour later.

Manson died in prison in 2017 after serving more than 45 years for directing his “Manson Family” clan to kill seven people in California during the summer of 1969, including pregnant actress Sharon Tate, the wife of director Roman Polanski.