Geoffrey Giuliano (formerly Ronald McDonald on TV ads)is an American author, radio personality, and film actor. He has been a vegetarian since 1970.
Giuliano worked for an advertising agency,Vickers & Bensons in Canada, portraying McDonald's advertising figurehead Ronald McDonald. Later, he decried the fast food company, "who make their millions off the murder of countless animals and the exploitation of children for their own ends", on behalf of the plaintiffs in the 1991 London "McLibel" case.
As an actor, he played a supporting role as pirate Captain Li in a made-for-television movie that aired on the Hallmark Channel cable network called Mysterious Island. Since then he has co-starred in The Lost Men, the action thriller Bangkok Adrenaline, and the satirical drama Monks & Mamasans.