Derek Leonard Roy (born May 4, 1983) is a Canadian former professional ice hockey centre who played in the National Hockey League (NHL) with the Buffalo Sabres, Dallas Stars, Vancouver Canucks, St. Louis Blues, Nashville Predators and the Edmonton Oilers.

The next season, 2001–02 Roy set his OHL career highs of 43 goals and 89 points and continued to be the Rangers' leading scorer.

In 2006–07, Roy improved to 63 points as the Sabres captured the Presidents' Trophy with the NHL's best regular season record.

With the departures of co-captains Chris Drury and Daniel Brière to the New York Rangers and Philadelphia Flyers, respectively, the Sabres failed to make the 2008 playoffs.

Approaching the last year of his contract, on July 2, 2012, Roy was traded by the Sabres to the Dallas Stars in exchange for Steve Ott and Adam Pardy.

Due to the effect of the 2012–13 NHL lock-out, Roy played in just 30 games with the Stars in the 2012–13 season before, on April 2, 2013, he was traded to the Vancouver Canucks in exchange for prospect Kevin Connauton and a second-round draft pick in 2013.

Left to explore free agency by the Canucks, on July 6, 2013, Roy and the St. Louis Blues agreed in principle to a one-year, $4 million contract.

After a single season with the Blues, Roy was again a free agent, whereupon he signed a one-year, $1 million contract with the Nashville Predators on July 15, 2014.

[16] In 2018, Roy was announced as a member of the 2018 Canadian men's national ice hockey team for the 2018 Winter Olympics in Pyeongchang.