Robert Blair Ridder (July 21, 1919 – June 24, 2000) was an American ice hockey administrator, media businessman, and philanthropist. He was the founding president of the Minnesota Amateur Hockey Association, and managed the United States men's national ice hockey team at the 1952 and 1956 Olympics. He was a director in the Knight Ridder media company which controlled several television and radio stations, and newspapers in Minnesota. His wealth allowed him to be a founding owner of the Minnesota North Stars and helped him provide funding for the construction of Ridder Arena at the University of Minnesota. For his work in hockey in the United States, he received the Lester Patrick Trophy, and was inducted into the United States Hockey Hall of Fame and the IIHF Hall of Fame.