McLaren's long-running title partnership with Vodafone will end at the completion of the 2013 season.
The Vodafone backing with McLaren started back in 2007, with Lewis Hamilton winning the title for the squad the following year.
In a statement confirming the end of the association, McLaren said it will not announce a replacement until December 2.
“We're immensely proud that, having been set on a number of ambitious challenges by Vodafone back in 2007, together we've met or exceeded each and every one,” said McLaren team principal, Martin Whitmarsh, in the statement.
“Our focus is on continuing to drive results for all our partners throughout the 2013 season and we look forward to making a major title partnership announcement towards the end of the year.”
McLaren's engine supply deal with Mercedes also concludes at the end of the season, with speculation rife that the Woking, UK, based outfit could reunite with Japanese car giant Honda.
Earlier this week, Whitmarsh denied that an engine change is on the cards for 2014, but did not rule out such a move for the following season.