Prince Harry and Meghan Markle have been hiding out at the home of Canadian billionaire Frank Giustra, whose close ties to the Clintons have created international controversy, Page Six can exclusively reveal.

Harry and Meghan refused to reveal the owner of the multi-million dollar waterfront mansion near Victoria, British Columbia — the place where they plotted their shock exit from the royal family.

But multiple sources with knowledge of the situation told Page Six that the owner is Giustra, 62, who made his fortune as a stockbroker, co-founded Hollywood studio Lionsgate — producing flicks including “American Psycho” and the Michael Moore documentary “Fahrenheit 9/11” — and is best known in the US as one of the biggest donors to the Clinton Foundation.

Giustra, a divorced father of two, is no stranger to controversy.

In 2005, he and President Bill Clinton traveled together to Kazakhstan to meet with the former Soviet republic’s authoritarian leader. Days later, Giustra acquired shares in three of the country’s state-run uranium mines — a venture valued at more than $3 billion. Months after the Kazakh pact, Giustra reportedly gave a $31.3 million donation to the Clinton Foundation and has since publicly pledged he’ll donate another $100 million.

Both Giustra and Clinton have denied the former US president helped him cement the Kazakh deal, and Giustra later divested himself of the assets.

Then in 2016, as Hillary Clinton was running for president, the leaked e-mails of her campaign chairman, John Podesta, revealed that Giustra and Mexican billionaire Carlos Slim gave an endowment of $20 million in 2010 to the Clinton Foundation to set up the for-profit Haiti Development Fund, intended to give seed money to Haitian entrepreneurs after the devastating earthquake. Yet there is “almost nothing in the public record” showing what happened to the millions of dollars, according to reports at the time.

Giustra was furious at the claims and later told Canada’s National Post that the Clinton controversy was “insanity … a f–king circus,” ranting, “I’m like, seriously, folks? I’m giving away money. There’s a campaign, a political campaign. Anybody with half a brain would know what’s happening.”

Guistra, who currently runs the private equity firm Fiore Financial, remains on the board of directors of the Clinton Foundation and is a renowned philanthropist through his Radcliffe Foundation, which helps causes such as the Boys Club network and the homeless and supports the International Crisis Group by providing humanitarian aid and supplies to refugee camps in Greece and Turkey.

He won the 2014 Dalai Lama Humanitarian Award and the Order of British Columbia in 2016, the highest civilian honor for achievement benefiting local people.

Giustra — who did not respond to numerous calls and e-mails from Page Six for comment — is believed to have loaned the royal couple his uber-private digs for free.

The main house, called Mille Fleurs, was bought in 2014 and registered under a local country club to shield the identity of the owner. Even the neighbors haven’t known who the buyer is. The home is11,416 square feet, with five bedrooms and eight bathrooms, and the property also boasts a 2,349-square-foot guest cottage with three beds and two baths.

Meghan and Harry’s publicist, Sara Latham, is a former Hillary Clinton aide.

But sources told Page Six that the royal couple’s access to the mansion was set up through famed music producer David Foster, not Latham.

Giustra is a very close friend of Foster, whose wife Katharine McPhee went to school and worked on theater productions with Meghan as the two women grew up in Los Angeles.

Foster has already said he set up Meghan and Harry with the house after learning they were in need of a discreet location to spend the holidays.

A rep for Foster declined comment to The Post.

On Thursday, Meghan flew back to the waterfront bolt-hole to join baby Archie, who was under the care of a nanny, following a trip to London earlier in the week, when she and Harry made their shocking announcement to quit the British royal family. Harry has stayed behind in the UK to deal with the fallout from “Megxit” but is expected to join Meghan in Canada later this week, after a pre-scheduled public engagement Thursday.

It is not known how long the couple will remain at Giustra’s property, but it is believed they will make Toronto or Vancouver their main home after finalizing the terms with Queen Elizabeth and Buckingham Palace officials to step down as senior royals.

On Sunday, Giustra denied owning the home on Twitter, writing, “I was disappointed to read this morning’s error-filled article about me in ⁦@nypost⁩ I do not own a home in, or near, Victoria, BC. I have never been contacted by a member of the British Royal family, by the Duke and Duchess of Sussex, or by any of their representatives. Unsurprisingly, the New York Post used this non-story as an opportunity to recycle a series of lies about me that have been repeatedly and definitively disproved by The New York Times, Fox News….and the US Department of Justice, among others. Once again, the Post has confused fake news and for evidence-based investigative journalism.”