Robert Gordon Orr, OC (Order of Canada) (born March 20, 1948 in Parry Sound, Ontario) is a retired Canadian ice hockey player. A defenceman (defenceman (ice hockey)), he is widely acknowledged to be one of the greatest hockey players of all time. His National Hockey League (NHL) career included two seasons with the Chicago Black Hawks (Chicago Blackhawks) and the rest of his career with the Boston Bruins.

Orr won two Stanley Cup championships with the Bruins when Boston defeated the St. Louis Blues (St. Louis Blues (ice hockey)) in the 1970 Stanley Cup Finals in four games and the New York Rangers in the 1972 Stanley Cup Finals in six games, 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 straight Norris Trophies (Norris Trophy) as the leagues 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 (Art Ross Trophy) and holds the record for most points and assists in a single season by a defenceman. Orr also won three consecutive Hart Trophies (Hart Trophy) as the leagues most valuable player, helping Boston to three regular season first-place finishes.

After his retirement, he became a player agent (sports agent), with partners Paul Krepelka and Rick Curran. Their Orr Hockey Group was incorporated in 2002 and represents 33 active NHL players (fourth most of any agency) that include Jason Spezza, Eric Staal, Cam Ward, Taylor Hall and Jeff Carter.