Derby have sold the naming rights to their Pride Park stadium to new global sports drink company iPro.
The deal, which is believed to be one of the biggest independent deals by a club in Football League history, will net the Rams Â£7million over 10 years.
It will see the re-naming of Pride Park, which has been the club's home for the past 16 years since moving from the Baseball Ground, to the iPro Stadium.
Derby will play their first game at the newly-named iPro Stadium when they host Blackpool in a televised Sky Bet Championship fixture on December 7.
"To ensure that Derby County remains as competitive as possible we need to explore all forms of revenue generation," said the club's chief executive and president Sam Rush.
"Stadium naming rights is a key asset for the club and we are delighted that we have been able to reach an agreement with iPro.
"iPro is a challenger brand that is looking to gain significant market share and we believe that the partnership works well for both parties.
"This agreement, which we believe to be ground-breaking, is the culmination of a huge amount of work from all parties.
"I am proud of the hard work that has resulted in a successful outcome and great thanks should go to the club's commercial department and in particular our commercial manager Ashley Peden, who should take huge credit for his efforts."