Incumbent McCann London has worked with the firm since 2018.
Just Eat is reviewing its global advertising account, following its merger with Takeaway.com in a $8.5 billion (£6.2 billion) deal last year.
AAR is assisting with the process and McCann has been invited to repitch.
Shortly after the merger, the Amsterdam-based group announced the US$7.3 billion (£5.3 billion) acquisition of US-based delivery platform Grubhub, with the deal set to go through later this year.
“Following the combination of Just Eat and Takeaway.com, the business has grown rapidly to become a leading online food-delivery marketplace with operations across 23 countries. As a result, we are reviewing our advertising and communications requirements to build on the great work done to date by both legacy businesses,” a spokesperson for Just Eat said.
"Just Eat Takeaway.com is now looking to appoint one global creative agency to help us deliver campaigns with a unified brand platform across all of our operating markets.”
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