Ricciardo is due to fall out of contract at the end of the 2018 season and there has been plenty of speculation he could depart as there are likely to be seats available at both Mercedes and Ferrari ahead of the 2019 campaign.
Horner has now confirmed Red Bull are keen to extend the Australian's deal and says he hopes both Ricciardo and team-mate Max Verstappen remain on board until 2020.
“Ricciardo is technically out of contract at the end of the 2018 season as he would have completed a five-year contract,” Horner said, as reported by Crash.net. “What is absolutely clear is our intention to retain both of our drivers until 2020.”
He added: “The absolute intention is we want Verstappen and Ricciardo in Red Bull Racing cars going forward."
Ricciardo has previously stated his preference is to remain with Red Bull although he also admitted he may consider an exit if the team cannot provide him with a car capable of challenging for the World Championship.