Denis Sergeyevich Grebeshkov (Russian: Денис Сергеевич Гребешков; born October 11, 1983) is a Russian professional ice hockey defenceman currently playing for the Nashville Predators of the National Hockey League (NHL).
Grebeshkov was a first round selection, 18th overall by the Los Angeles Kings in the 2002 NHL Entry Draft. He was traded to the New York Islanders on March 8, 2006 along with Jeff Tambellini in exchange for Mark Parrish and Brent Sopel. Having been unable to come to a contract agreement with the Islanders, Grebeshkov returned to Russia to play with Lokomotiv Yaroslavl for the 2006-07 season.
On February 18, 2007, his rights were traded to the Edmonton Oilers for defenceman Marc-André Bergeron and a third round choice in the 2008 NHL Entry Draft.