The Edinburgh-based agency has been appointed on a retained basis and will work alongside other agencies including JWT.
Paul Condron, global marketing controller at Edrington-owned The Macallan, said: “We’re delighted to be working with a partner of the stature and track record of Leith. 2018 has already been a landmark year for The Macallan.”
Richard Marsham, group managing partner at The Leith Agency, said: “The ambition of The Macallan is second to none and we’re delighted to help in any way to fulfil that ambition.
“Working on one of world’s leading luxury brands is a great testimony to the team we have here at Leith.”