“I am grateful for the backing I have received but out of consideration for SSU I will leave my post as SSU chairwoman today,” said Sjödin, writing in Dagens Nyheter.
The Court of Appeals decision on Tuesday not to grant Sjödin the opportunity to appeal was followed by a string of calls for her resignation.
Stockholm District Court convicted Sjödin for assaulting and verbally abusing a bouncer at the Crazy Horse Pub in January of this year.
But the youth leader remains defiant, maintaining the she and a friend were mistreated by staff at the city centre establishment.
“I am not going to apologize for something I haven’t done in order to ensure my political survival.
“It is bad enough having to pay compensation to the man who hit me and who did not have any injuries,” wrote Sjödin.
Leading members of SSU were planning to meet on Sunday to discuss Anna Sjödin’s future as chairwoman.
Instead SSU secretary Mattias Vepsä held a press conference on Saturday morning to confirm Sjödin’s resignation.
Mattia Vepsä will serve as chairman in a temporary capacity until the organisation has elected a new leader.