Las Vegas, Nevada - President Joe Biden confused his French counterpart Emmanuel Macron with France's long-dead former leader François Mitterrand, in a speech that went viral Monday.

Addressing a campaign event in Las Vegas on Sunday, Biden described Macron's reaction to a speech at a G7 meeting in 2020.

As well as getting Macron's name wrong, he misstated the country he leads.

"And Mitterrand – Macron, from Germany – I mean, from France looked at me and said, said 'You know, what – why – how long you back for?'" the 81-year-old said, according to a White House transcript.

Politicians Mike Johnson offers latest excuse for withholding damaging Matt Gaetz ethics report

Mitterrand was French president from 1981 to 1995, and died in 1996.

Video of Biden's mix-up has been viewed thousands and shared thousands of times on X.

Biden has made similar public mistakes in the past, notably in September 2022 when he called on a deceased congresswoman at a conference she helped organize.

"Jackie, are you here? Where's Jackie? I think she was going to be here," he said, referring to Indiana representative Jackie Walorski, who had died a month earlier.

And in April last year, a White House transcript corrected Biden when he confused New Zealand's All Blacks rugby team with the Black and Tans, a British paramilitary force notorious for its crimes in the Irish War of Independence.

Biden's predecessor and probable opponent in the November presidential election, Donald Trump, made a similar gaffe last month, confusing his party rival Nikki Haley with former House speaker Nancy Pelosi.