Havas SA is a French multinational advertising and public relations company, headquartered in Paris. It operates in more than 100 countries and is one of the largest global advertising and communications groups in the world.

Its holdings include Havas Creative Group (including Havas Creative, Arnold Worldwide and a range of other agencies), Havas Media Group (including Havas Media, Havas Sports & Entertainment and Arena Media) and Havas Health & You.