Red Bull will continue to be powered by Honda in 2021.
Honda have been considering their future in Formula One, but the announcement of a one-year extension with Red Bull ensures they will remain in the sport beyond next season.
Toro Rosso, Red Bull's junior team, will also continue their partnership with the Japanese manufacturer into 2021.
Mercedes and Ferrari are still to sign up to the sport's post-2020 regulations, which were outlined in the United States last month. However, both teams are expected to agree terms with F1 to stay.
Honda endured a torrid return to the grid with McLaren in 2015, but after severing ties with the British team they have gone on to forge a successful relationship with Red Bull - powering Max Verstappen to three victories this season.
The sport gathers in the Middle East this weekend for the season-concluding Abu Dhabi Grand Prix. Lewis Hamilton will be bidding to win the 11th race of his championship year.
