| TRANSACTIONS | ||
| Date | Transaction | |
| 04/04/2004 | Adam Oates - Retired | |
| 03/09/2004 | Tommy Salo - Traded - w/ 2005 6th round pick for Tom Gilbert | |
| 03/09/2004 | Tom Gilbert - Traded - for Tommy Salo and 2005 6th rd. pick | |
| 03/07/2004 | Mike Bishai - Sent to Minors - Toronto-AHL | |
| 03/03/2004 | Petr Nedved - Traded - w/ one player for two players and pick | |
| 03/03/2004 | Tyler Moss - Sent to Minors - Toronto-AHL | |
| 03/03/2004 | Chad Hinz - Sent to Minors - Toronto-AHL | |
| 03/03/2004 | Stephen Valiquette - Traded - w/ two players & pick for two players | |
| 03/03/2004 | Dwight Helminen - Traded - w/ two players & pick for two players | |
| 03/03/2004 | Jussi Markkanen - Traded - w/ one player for two players and pick | |
| 02/26/2004 | Chad Hinz - Called up from Minor - from Toronto-AHL | |
| 02/26/2004 | Tony Salmelainen - Sent to Minors - Toronto-AHL | |
| 02/25/2004 | Jani Rita - Sent to Minors - Toronto-AHL | |
| 02/20/2004 | Tony Salmelainen - Called up from Minor - from Toronto-AHL | |
| 02/17/2004 | Tyler Moss - Called up from Minor - from Toronto-AHL | |
| 02/17/2004 | Michael Morrison - Sent to Minors - Toronto-AHL | |
| 02/17/2004 | Marc-Andre Bergeron - Called up from Minor | |
| 02/17/2004 | Jani Rita - Called up from Minor | |
| 02/16/2004 | Tyler Moss - Traded - for Peter Sarno | |
| 02/16/2004 | Tyler Moss - Sent to Minors - Toronto-AHL | |
| 02/16/2004 | Jani Rita - Called up from Minor - from Toronto-AHL | |
| 02/16/2004 | Marc-Andre Bergeron - Called up from Minor - from Toronto-AHL | |
| 02/16/2004 | Peter Sarno - Traded - for Tyler Moss | |
| 02/14/2004 | Michael Morrison - Called up from Minor - from Toronto-AHL | |
| 02/09/2004 | Mike Bishai - Called up from Minor - from Toronto-AHL | |
| 02/05/2004 | Jani Rita - Sent to Minors - Toronto-AHL | |
| 02/05/2004 | Mike Bishai - Sent to Minors - Toronto-AHL | |
| 01/29/2004 | Mikko Luoma - Sent to Minors - Toronto-AHL | |
| 01/28/2004 | Jani Rita - Called up from Minor - from Toronto-AHL | |
| 01/28/2004 | Mike Bishai - Called up from Minor - from Toronto-AHL | |
| 01/22/2004 | Marc-Andre Bergeron - Sent to Minors - Toronto-AHL | |
| 01/18/2004 | Mikko Luoma - Called up from Minor - from Toronto-AHL | |
| 01/06/2004 | Mikko Luoma - Sent to Minors - Toronto-AHL | |
| 01/05/2004 | Igor Ulanov - Signed - One-year contract | |
| 01/05/2004 | Doug Lynch - Sent to Minors - Toronto-AHL | |
| 01/05/2004 | Marc-Andre Bergeron - Called up from Minor - from Toronto-AHL | |
| 01/02/2004 | Doug Lynch - Called up from Minor - from Red Deer-WHL | |
| 12/30/2003 | Mikko Luoma - Called up from Minor - from Toronto-AHL | |
| 12/29/2003 | Marc-Andre Bergeron - Sent to Minors - Toronto-AHL | |
| 12/29/2003 | Mikko Luoma - Called up from Minor - from Toronto-AHL | |
| 12/16/2003 | Mike Comrie - Traded - for Jeff Woywitka, two draft picks | |
| 12/16/2003 | Bobby Allen - Sent to Minors - Toronto-AHL | |
| 12/16/2003 | Jeff Woywitka - Traded - for two draft picks, Mike Comrie rights | |
| 12/16/2003 | Jeff Woywitka - Sent to Minors - Toronto-AHL | |
| 11/29/2003 | Stephen Valiquette - Sent to Minors - Toronto-AHL | |
| 11/28/2003 | Tony Salmelainen - Sent to Minors - Toronto-AHL | |
| 11/27/2003 | Peter Sarno - Sent to Minors - Toronto-AHL | |
| 11/27/2003 | Bobby Allen - Called up from Minor - from Toronto-AHL | |
| 11/19/2003 | Steve Staios - Contract extended - Three-year extension | |
| 11/17/2003 | Adam Oates - Signed as Free Agent - One year, $1.95 million | |
| 11/11/2003 | Alexei Semenov - Called up from Minor - from Toronto-AHL | |
| 11/10/2003 | Stephen Valiquette - Called up from Minor - Emergency recall from Toronto-AHL | |
| 11/10/2003 | Alexei Semenov - Sent to Minors - Toronto-AHL | |
| 11/03/2003 | Peter Sarno - Called up from Minor - from Toronto-AHL | |
| 10/31/2003 | Stephen Valiquette - Sent to Minors - Toronto-AHL | |
| 10/30/2003 | Tony Salmelainen - Called up from Minor - from Toronto-AHL | |
| 10/24/2003 | Stephen Valiquette - Called up from Minor - from Toronto-AHL | |
| 10/08/2003 | Rocky Thompson - Sent to Minors - Toronto-AHL | |
| 10/08/2003 | Stephen Valiquette - Claimed off waivers | |
| 10/08/2003 | Mikko Luoma - Sent to Minors - Toronto-AHL | |
| 10/08/2003 | Stephen Valiquette - Sent to Minors - Toronto-AHL | |
| 10/07/2003 | Peter Sarno - Sent to Minors - Toronto-AHL | |
| 10/05/2003 | Jamie Wright - Sent to Minors - Toronto-AHL | |
| 10/05/2003 | Jani Rita - Sent to Minors - Toronto-AHL | |
| 10/05/2003 | Bobby Allen - Sent to Minors - Toronto-AHL | |
| 10/05/2003 | Tony Salmelainen - Sent to Minors - Toronto-AHL | |
| 09/29/2003 | Ethan Moreau - re-signed - Four-year contract | |
| 09/17/2003 | Rumun Ndur - Sent to Minors - Toronto-AHL | |
| 09/17/2003 | Kenton Smith - Sent to Minors - Toronto-AHL | |
| 09/17/2003 | Sean McAslan - Sent to Minors - Toronto-AHL | |
| 09/17/2003 | Kristian Antila - Sent to Minors - Toronto-AHL | |
| 09/17/2003 | Mathieu Roy - Sent to Minors - Toronto-AHL | |
| 09/17/2003 | Jay Legault - Sent to Minors - Toronto-AHL | |
| 09/12/2003 | Ethan Moreau - re-signed - Two-year contract | |
| 09/12/2003 | Georges Laraque - re-signed - Three-year contract | |
| 09/12/2003 | Brad Winchester - Signed - Two-year contract | |
| 09/01/2003 | Rumun Ndur - Invited to Training | |
| 09/01/2003 | Jamie Wright - Invited to Training | |
| 09/01/2003 | Kenton Smith - Invited to Training | |
| 09/01/2003 | Brent Henley - Invited to Training | |
| 09/01/2003 | Curtis Sheptak - Invited to Training | |
| 08/21/2003 | Dan Smith - Signed as Free Agent - One-year contract | |
| 08/21/2003 | Fernando Pisani - re-signed - Three-year contract | |
| 08/14/2003 | Ryan Smyth - re-signed - Two years, $7 million | |
| 08/05/2003 | Michael Henrich - re-signed - One-year contract | |
| 08/05/2003 | Bobby Allen - re-signed - One-year contract | |
| 08/05/2003 | Shawn Horcoff - re-signed - Two-year contract | |
| 08/04/2003 | Marty Reasoner - re-signed - Two-year contract | |
| 08/04/2003 | Raffi Torres - re-signed - Two-year contract | |
| 07/29/2003 | Jason Smith - re-signed - One-year qualifying offer | |
| 07/29/2003 | Brad Isbister - re-signed - One-year contract | |
| 07/29/2003 | Chad Hinz - re-signed - One-year qualifying offer | |
| 07/21/2003 | Rocky Thompson - Signed as Free Agent - Two-year contract | |
| 07/21/2003 | Stephen Valiquette - Signed as Free Agent - One-year contract | |
| 07/03/2003 | Jan Horacek - Signed - One-year contract | |
| 07/03/2003 | Mikko Luoma - Signed - One-year contract | |
| 07/03/2003 | Mathieu Roy - Signed - Three-year contract | |
| 07/01/2003 | Brian Leetch - Unrestricted FA | |
| 07/01/2003 | Brian Swanson - Unrestricted FA | |
| 07/01/2003 | Todd Marchant - Unrestricted FA | |
| 06/30/2003 | Brian Leetch - Traded - for Jussi Markkanen, 2004 4th pick | |
| 06/30/2003 | Jussi Markkanen - Traded - w/2004 4th pick for Brian Leetch | |
| 06/30/2003 | Cory Cross - re-signed - Three-year contract | |