Peter Yarrow (born May 31, 1938) is an American singer and songwriter who found fame with the 1960s folk music trio Peter, Paul and Mary. Yarrow co-wrote (with Leonard Lipton) one of the group's greatest hits, "Puff, the Magic Dragon". He is also a political activist and has supported causes that range from opposition to the Vietnam War to the creation of Operation Respect, an organization that promotes tolerance and civility in schools.
