Robert Gordon "Bobby" Orr, OC (born March 20, 1948) is a retired Canadian ice hockey player. A defenceman, he is considered to be one of the greatest hockey players of all time. He played his National Hockey League (NHL) career with the Boston Bruins, with the exception of two brief seasons with the Chicago Black Hawks.

Orr won two Stanley Cup championships with the Bruins when Boston defeated the St. Louis Blues in the 1970 Stanley Cup Finals in four games and the New York Rangers in the 1972 Stanley Cup Finals in six games, respectively, scoring the clinching goals in both series, and was awarded the Conn Smythe Trophy as the playoff MVP both years. He also led Boston to the 1974 Stanley Cup Finals where they were defeated by the Philadelphia Flyers in six games. Winning a record eight Norris Trophies as the league's best defenceman, Orr is often credited for revolutionizing his position. He remains the only defenceman to have won the league scoring title with two Art Ross Trophies and holds the record for most points and assists in a single season by a defenceman.

After his retirement, he became a player agent, a position he holds today.