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Host Stephen Colbert performs onstage during the 69th Annual Primetime Emmy Awards at Microsoft Theater on September 17, 2017 in Los Angeles, California.
"I was saddened to see how bad the ratings were on the Emmys last night - the worst ever," Trump tweeted on Tuesday evening.
"Smartest people of them all are the "DEPLORABLES," Trump said, referencing a term Hillary Clinton used to describe some of Trump's supporters during the contentious 2016 election.
Though the 2017 Emmys ratings were not "the worst ever" as Trump described, they averaged 11.4 million viewers, about 100,000 more than in 2016 - the show's all-time low, according to Variety.
During the awards Sunday night, Trump bore the brunt of several jokes made by its host, comedian Stephen Colbert and several other celebrities who won awards that night.
"Unlike the presidency, Emmys go to the winner of the popular vote," Colbert joked at one point, referring to the results of the US presidential election.
Trump's comments about the Emmys came just hours after he delivered a fiery speech before the United Nations General Assembly in New York, in which he threatened the US could "totally destroy North Korea" if its nuclear aggressions continue.