Trump would be the first sitting USA president to attend the meeting of global economic and financial leaders since Bill Clinton in January 2000. Presidents Bush and Obama did not turn up in their 16 years in the White House.
In a statement, Sarah Sanders, the White House press secretary, said: "The president welcomes opportunities to advance his America First agenda with world leaders", Sanders said.
Last year's conference came the same week of Trump's inauguration and delegates at the time predicted Trump would prove a more pragmatic leader than he suggested on the campaign trail or on Twitter.
It is rare for a US president to attend the Davos gathering.
This year's meeting will take place on 23-26 January under the theme "Creating a Shared Future in a Fractured World".
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Some of Mr. Trump's advisers were befuddled by his planned trip, coming a year after his team decided not to send a representative to the 2017 gathering.
Last year, President Xi Jinping became the first Chinese leader to attend the meet, whose stated mission is "improving the state of the world by engaging business, political, academic, and other leaders of society to shape global, regional, and industry agendas". He has also reopened talks on the North American Free Trade Agreement with Canada and Mexico.
Ms Sanders rejected the notion that Mr Trump's attendance symbolised he was backing away from his message of economic nationalism.
The first sitting USA president to appear in the Swiss resort was Bill Clinton in 2000, at the forum's 30th-anniversary session.