Terry Sanderson (August 22, 1952 – November 27, 2014) was the general manager of the Toronto Rock of the National Lacrosse League and has also held various coaching positions through the NLL. He was a member of the Sanderson family of Orangeville, Ontario, which has produced a number of lacrosse players and coaches.
Sanderson began his NLL coaching career in 2000 with the Albany Attack. He coached the Attack for two seasons, compiling an 11-15 record. After the 2001 season, Sanderson resigned in order to take the head coach and GM position for the expansion Montreal Express. The Express only lasted a single season before folding.
In 2002, Sanderson replaced his brother Lindsay as head coach of the Ottawa Rebel. The Rebel finished the 2003 season dead last in the NLL at 4-12, and folded after the season.
Before the 2004 season began, Toronto Rock head coach and GM Les Bartley announced that he would not be behind the bench for the upcoming season due to his battle with colon cancer, and assistant coaches Ed Comeau and Derek Keenan were promoted to interim head coach and GM respectively. However, after beginning the season 2-4, Comeau and Keenan were fired, and Terry Sanderson was hired as the new GM and head coach. Sanderson turned the Rock around, guiding them to a 10-6 record and first place in the Eastern Division. They lost to Buffalo 19-10 in the division finals.
During the off-season, Sanderson made a blockbuster trade with GM Johnny Mouradian of the San Jose Stealth (himself a former Rock GM), acquiring his son Josh, nephew Phil, and Rusty Kruger for fan favourite Steve Toll, Darryl Gibson, two draft picks, and a player to be named later, who ended up being goaltender Anthony Cosmo. Any cries of "nepotism" were silenced during the next season, as Josh set a new single-season assists record with 71, and the Rock finished 12-4 and in first place in the Eastern division for the seventh straight year. They defeated the Rochester Knighthawks in the division finals, and then beat the Arizona Sting in the Championship game, held in Toronto, to win their fifth NLL championship in seven years. Former coach and GM Les Bartley died the day after the Championship game.