The agency scooped the business after a pitch against two undisclosed agencies, which was overseen by the Glenfiddich global relationship marketing manager, Utadi Murphy.
The appointment follows a review of all of Glenfiddich's global advertising arrangements, which kicked off in August last year with a pitch for the brand's above-the-line business.
Glenfiddich handed the work to Leagas Delaney in November.
JPMH will now be responsible for redesigning the Glenfiddich website, as well as creating a number of global digital and direct marketing campaigns.
The agency will also oversee a social media push, which will aim to drive consumer engagement and increase levels of commitment to the brand.