Vodafone will end its Dublin GAA sponsorship in December.
The telecoms provider signed a three year deal with Dublin in 2010, valued at around €4.65m.
Separately the company has announced it will conclude its seven-year title sponsorship of Formula One team McLaren at the end of the 2013 season.
A statement by Vodafone Ireland said the company had taken its decision following a review of its sponsorship strategy.
"Vodafone will continue its relationship with Dublin GAA as an associate sponsor beyond this year’s championship, into 2014," it said.
Dublin GAA Chairman Andy Kettle said the county was in a strong position to secure a new sponsor for the 2014 season and beyond.
“We will go to market in the summer to secure a new sponsor in the confidence that this is by far the strongest county brand and sponsorship property in the GAA and also one of the most coveted and high profile sports sponsorships in Ireland," he said.
The 2010 Vodafone deal coincided with a resurgence in Dublin's fortunes in both hurling and football.
Over the three year period the county landed a senior National Hurling League title, under-21 and minor football All Ireland championships and, in 2011, an All-Ireland senior football win.
The decision coincides with a shake-up of Vodafone's global sponsorship deals. The company's deal with the British based McLaren Formula One racing team is another casualty.
The team won the world title through Lewis Hamilton in 2008, the second year of the Vodafone deal, and have also had another world champion, Jenson Button, driving for them since 2010.