Queens Park Rangers owner
Reports have suggested Hughes, whose side is bottom of the Barclays Premier League, will be facing the axe if the R's do not record its first top-flight victory of the season next Saturday by beating Reading at home.
But writing on his Twitter account, Fernandes has described such claims as "rubbish" and insists the club's hierarchy is behind Hughes.
"Mark has my backing and the shareholders," Fernandes said.
"We need a little luck and no injuries. What's written in the press is all rubbish.
"I honestly believe we have one of the best managers in the premier league. And we are in for the long term. Whatever happens. We love QPR.
"Ill be there at Reading so rangers fans ill be available to meet and chat.
"Trust me on this one. Keep the faith. Stability is the key."
The Welshman recruited a raft of new players over the summer, but so far this term the London outfit have lost six and drawn three of their nine top-flight fixtures, with the latest defeat being Saturday's 1-0 reverse at Arsenal.
English Premier League
English Premier League champion Manchester United will start the 2013-2014 season at League Cup winner Swansea.