Magnus Karlsson, editor-in-chief at Swedish daily Smålandsposten said on its website that he doesn't want the newspaper's brand "to be spread with a potentially viral and erroneous story".
"We work with real news. Even on April 1st," he said.
The "fake news" phenomenon broke out amid the 2016 US presidential election and grew even further when Donald Trump, during his first press conference on January 11th as then president-elect, shouted at a CNN reporter: "You are fake news!"
Sweden was a victim of "fake news" when Fox News in February interviewed a "security and defence expert" who turned out to have criminal convictions in the US and no connections to the Scandinavian nation's security services, Swedish daily Dagens Nyheter reported.
Now, several local daily Swedish newspapers including Dalarnas Tidningar, Hallpressen and Västerbottens-Kuriren have refrained from publishing April Fools' Day jokes.
"Historically, we've had super successful April Fools jokes. But because of debates and discussions about the media's credibility being connected to fake news, we didn't want to do it this year," Ingvar Näslund, editor-in-chief at Västerbottens-Kuriren told Swedish news agency TT.
Erik Berger, editor-in-chief at the daily Jonköpings-Posten told AFP that his newspaper would "write in (Saturday's) edition" about why they won't publish such jokes.
In neighbouring Norway, the largest media organizations such as public broadcaster NRK, and newspapers Aftenposten, VG and Dagbladet have also abandoned this old tradition.
NRK said local newspapers would follow suit.
Øyulf Hjertenes, editor at the local daily Bergens Tidende, told NRK that in a climate where "false news is spreading, it would be a mistake on our part" to publish jokes on April 1.
Kristin Monstad, publishing editor at Drammens Tidende, added: "What is written in Drammens Tidende must be true."