The appointment comes after a pitch that involved both roster and non-roster agencies, and means that Euro RSCG is responsible for all of Chivas' integrated marketing activity around the world.
The Aegis-owned agency De-construct, which merged with glue Isobar in January, was previously the incumbent on the Chivas global digital account.
Euro RSCG has handled above-the-line advertising for Chivas since May 2008 after winning a pitch for the business against TBWA\Worldwide, the previous incumbent on the account.
Last year, the agency rolled out a TV ad for the whisky brand highlighting its luxurious nature. The spot ran in all of the key Chivas markets, including the UK and the US, and introduced the new strapline: "Live with chivalry."