Derek Smith (born October 13, 1984 in Belleville) a professional hockey player currently playing for the Calgary Flames of the National Hockey League (NHL).
After playing 123 games over four seasons between 2000 and 2004 for the Wellington Dukes of the Ontario Provincial Junior Hockey League, Smith went on to play three more seasons for the Lake Superior State Lakers. Undrafted, he signed as a free agent with the Ottawa Senators of the National Hockey League (NHL) on April 12, 2007, and decided to leave college a year early to pursue his dreams of playing in the NHL. After training camp, Smith was assigned to the Senators' top minor league affiliate, the Binghamton Senators. Smith was re-signed by the Senators to a one-year contract on July 29, 2009.
He made his NHL debut against the Detroit Red Wings on February 13, 2010, a 4–1 loss. He recorded his first NHL point when he assisted on a goal by Ottawa's Nick Foligno against the Atlanta Thrashers on March 3, 2011. In 2010-11, Smith was a member of the Binghamton Senators as they captured the 2011 Calder Cup championship in the American Hockey League. In 71 regular season games that season with Binghamton, he recorded 10 goals and 44 assists for 54 points which placed him 4th among all defenceman in the AHL.
Smith was signed by the Calgary Flames on July 12, 2011.