Resonate is the brand's first UK consumer PR agency since it was acquired by Pernod Ricard from Allied Domecq in 2005.
The agency will target men in their late 20s and early 30s.
The brand's UK trade PR is handled by Attention, which - like Resonate - promotes Pernod Ricard's Malibu and Havana Club brands.
Resonate won a competitive pitch for the Stoli brief.
SEPERATELY... Resonate has been appointed without a pitch by Lastminute.com to work on two undisclosed consumer projects.