This is a list of all suspensions that have occured in the National Hockey League (NHL) during the 2009–10 NHL season.
| Date | Name | Team | Offense | Length |
|---|---|---|---|---|
| September 21, 2009 | Pascal Morency | New York Islanders | Leaving the bench to start a fight with Dion Phaneuf during preseason. | 8 games (3 preseason games and 5 regular season games) |
| September 23, 2009 | Sean O'Donnell | Los Angeles Kings | Cross-checking Matt Martin during preseason. | 5 games (3 preseason, 2 regular season) |
| September 24, 2009 | Francis Lessard | Phoenix Coyotes | Boarding Ryan Donelly during preseason. | 5 games (2 preseason, 3 regular season) |
| October 10, 2009 | Brad Staubitz | San Jose Sharks | Hitting Davis Drewiske after whistle on icing. | 1 game |
| October 22, 2009 | Evgeny Artyukhin | Anaheim Ducks | Slew-footing Matt Niskanen. | 3 games |
| October 24, 2009 | Tuomo Ruutu | Carolina Hurricanes | Boarding Darcy Tucker. | 3 games |
| October 27, 2009 | Steve Ott | Dallas Stars | Low hit on Carlo Colaiacovo. | 2 games |
| November 2, 2009 | James Wisniewski | Anaheim Ducks | Illegal hit on Shane Doan. | 2 games |
| November 4, 2009 | Dane Byers | New York Rangers | Automatic suspension due to instigator penalty in the last five minutes of a game. | 1 game |
| November 5, 2009 | Shane O'Brien | Vancouver Canucks | High-sticking Sean Avery while both players were on their respective benches | 1 game |
| November 9, 2009 | Curtis Glencross | Calgary Flames | Blindsided hit on Chris Drury. | 3 games |
| November 12, 2009 | Darcy Hordichuk | Vancouver Canucks | Automatic suspension due to instigator penalty in the last five minutes of a game. | 1 game |
| November 20, 2009 | James Neal | Dallas Stars | Hitting Derek Dorsett from behind. | 2 games |
| November 23, 2009 | Georges Laraque | Montreal Canadiens | Knee-on-knee hit with Niklas Kronwall. | 5 games |
| November 24, 2009 | Daniel Briere | Philadelphia Flyers | Cross-checking Scott Hannan in the head. | 2 games |
| November 28, 2009 | Patrick Kaleta | Buffalo Sabres | Boarding Jared Ross. | 2 games |
| November 29, 2009 | Matt Cooke | Pittsburgh Penguins | Deliberate check to the head of Artem Anisimov. | 2 games |
| December 1, 2009 | Alexander Ovechkin | Washington Capitals | Knee-on-knee hit against Tim Gleason. | 2 games |
| December 6, 2009 | Daniel Carcillo | Philadelphia Flyers | Sucker-punched Matt Bradley. | 4 games |
| January 11, 2010 | Ed Jovanovski | Phoenix Coyotes | Elbowing to the head of John Tavares | 2 games |
| January 20, 2010 | Andy Sutton | New York Islanders | Boarding Pascal Dupuis. | 2 games |
| January 30, 2010 | Mike Green | Washington Capitals | Elbowing Michael Frolik in the head. | 3 games |
| February 14, 2010 | Cam Janssen | St. Louis Blues | Elbowing Matt Bradley in the head. | 5 games |
| March 5, 2010 | Maxim Lapierre | Montreal Canadiens | Boarding Scott Nichol on a late hit after a scoring chance. | 4 games |
| March 6, 2010 | Derek Boogaard | Minnesota Wild | Knee-on-knee hit on Ryan Jones. | 2 games |
| March 15, 2010 | Alexander Ovechkin | Washington Capitals | Boarding Brian Campbell. | 2 games |
| March 18, 2010 | James Wisniewski | Anaheim Ducks | Boarding Brent Seabrook. | 8 games |
| March 30, 2010 | Daniel Carcillo | Philadelphia Flyers | Cross-checking David Clarkson in the face. | 2 games |
| April 2, 2010 | Colby Armstrong | Atlanta Thrashers | Elbowing Mathieu Perreault in the head. | 2 games |