Mr Trump wrote on his Facebook page: “Based on the incredibly inaccurate coverage and reporting of the record-setting Trump campaign, we are hereby revoking the press credentials of the phony and dishonest Washington Post.”
He wrote that he’s “no fan of” US president Barack Obama, but faulted the Post for a headline on Monday that he said read: “Donald Trump suggests President Obama was involved with Orlando shooting.”
The headline on Monday afternoon read: “Donald Trump seems to connect President Obama to Orlando shooting.”
Mr Trump said on Fox News that when it comes to fighting terrorism, Mr Obama“doesn’t get it, or he gets it better than anybody understands.”
Post spokeswoman, Kristine Coratti Kelly, said the headline was changed “to more properly reflect what Mr Trump said”. She added: “We did so on our own; the Trump campaign never contacted us about it.”
A Post photographer and reporter attended Mr Trump’s speech in New Hampshire without issue.
In a statement, Post editor Martin Baron said Mr Trump’s decision to revoke the paper’s press credentials “is nothing less than a repudiation of the role of a free and independent press”.
“When coverage doesn’t correspond to what the candidate wants it to be, then a news organisation is banished,” said Mr Baron.
“The Post will continue to cover Donald Trump as it has all along — honourably, honestly, accurately, energetically, and unflinchingly. We’re proud of our coverage, and we’re going to keep at it.”
Kathleen Carroll, executive editor of The Associated Press, said: “This is a race for the most powerful position on the planet.
“The public is interested in what the candidates do and say, and having independent coverage is part of what keeps the public informed.
“The founders who crafted the US Constitution may very well have disliked some of the stories written about them, but they enshrined the right to a free press in the First Amendment anyway.”
Mr Trump’s campaign has also revoked credentials from The Daily Beast, Politico and the Des Moines Register.
Trump has revoked the Washington Post's press credentials. If elected, he will build a wall around 13th and K Streets.— Karen Tumulty (@ktumulty) June 13, 2016