| Played For: | Phoenix Coyotes Ottawa Senators |
| Position: | Defence |
| Height Ft: | 6 |
| Height In: | 4 |
| Weight Lb: | 225 |
| Shoots: | Left |
| Birth Date: | September 11, 1973 |
| Birth Place: | Sault Ste. Marie, Ontario, Canada |
| Draft: | Undrafted |
| Career Start: | 1995 |
| Career End: | 2007 |
Sean Gagnon (born September 11, 1973) is a Canadian former professional ice hockey defenceman who played in the National Hockey League for the Phoenix Coyotes and the Ottawa Senators between 1997 and 2001. He played a total of 12 regular season games (seven for Phoenix and five for Ottawa) scoring one assist and collecting 34 penalty minutes.
Gagnon was undrafted and began his professional career in the ECHL with the Dayton Bombers and scored 61 points in 136 games. He also racked up a total of 665 penalty minutes in his two seasons with the Bombers. This was followed by a spell in the International Hockey League with the Fort Wayne Komets where he scored 7 goals and 14 points in 72 games with 457 penalty minutes. He finished his career in Germany, playing two seasons in the 2nd Bundesliga for the Lausitzer Füchse. He also had spells in Europe playing in Finland's SM-liiga for Jokerit in 1999 and a brief stint in the Russian Super League for HC Neftekhimik Nizhnekamsk, playing two games in 2003.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1990–91 | Sault Ste. Marie Elks | GNML | 46 | 21 | 26 | 47 | 218 | — | — | — | — | — | ||
| 1991–92 | Sudbury Cubs | NOJHL | 13 | 10 | 13 | 23 | 34 | — | — | — | — | — | ||
| 1991–92 | Sudbury Wolves | OHL | 44 | 3 | 4 | 7 | 60 | 5 | 0 | 1 | 1 | 4 | ||
| 1992–93 | Sudbury Wolves | OHL | 6 | 1 | 1 | 2 | 16 | — | — | — | — | — | ||
| 1992–93 | Ottawa 67s | OHL | 33 | 2 | 10 | 12 | 68 | — | — | — | — | — | ||
| 1992–93 | Sault Ste. Marie Greyhounds | OHL | 24 | 1 | 5 | 6 | 65 | 15 | 2 | 2 | 2 | 25 | ||
| 1992–93 | Sault Ste. Marie Greyhounds | M-Cup | — | — | — | — | — | 4 | 0 | 1 | 1 | 8 | ||
| 1993–94 | Sault Ste. Marie Greyhounds | OHL | 42 | 4 | 12 | 16 | 147 | 14 | 1 | 1 | 2 | 52 | ||
| 1994–95 | Dayton Bombers | ECHL | 68 | 9 | 23 | 32 | 339 | 8 | 0 | 3 | 3 | 69 | ||
| 1995–96 | Dayton Bombers | ECHL | 68 | 7 | 22 | 29 | 326 | 3 | 0 | 1 | 1 | 33 | ||
| 1996–97 | Fort Wayne Komets | IHL | 72 | 7 | 7 | 14 | 457 | — | — | — | — | — | ||
| 1997–98 | Phoenix Coyotes | NHL | 5 | 0 | 1 | 1 | 14 | — | — | — | — | — | ||
| 1997–98 | Springfield Falcons | AHL | 54 | 4 | 13 | 17 | 330 | 2 | 0 | 1 | 1 | 17 | ||
| 1998–99 | Phoenix Coyotes | NHL | 2 | 0 | 0 | 0 | 7 | — | — | — | — | — | ||
| 1998–99 | Springfield Falcons | AHL | 68 | 8 | 14 | 22 | 331 | 3 | 0 | 0 | 0 | 14 | ||
| 1999–00 | Jokerit | FIN | 42 | 3 | 5 | 8 | 183 | 11 | 4 | 1 | 5 | 22 | ||
| 2000–01 | Ottawa Senators | NHL | 5 | 0 | 0 | 0 | 13 | — | — | — | — | — | ||
| 2000–01 | Grand Rapids Griffins | IHL | 70 | 4 | 16 | 20 | 226 | 10 | 2 | 3 | 5 | 30 | ||
| 2001–02 | Hartford Wolf Pack | AHL | 42 | 3 | 5 | 8 | 200 | — | — | — | — | — | ||
| 2002–03 | San Antonio Rampage | AHL | 42 | 3 | 6 | 9 | 157 | 3 | 0 | 0 | 0 | 4 | ||
| 2003–04 | Neftekhimik Nizhnekamsk | RSL | 2 | 0 | 0 | 0 | 6 | — | — | — | — | — | ||
| 2003–04 | Neftekhimik Nizhnekamsk-2 | RUS-3 | 3 | 0 | 1 | 1 | 2 | — | — | — | — | — | ||
| 2003–04 | Flint Generals | UHL | 12 | 2 | 2 | 4 | 56 | — | — | — | — | — | ||
| 2003–04 | Utah Grizzlies | AHL | 7 | 0 | 0 | 0 | 6 | — | — | — | — | — | ||
| 2003–04 | St. John's Maple Leafs | AHL | 11 | 0 | 0 | 0 | 31 | — | — | — | — | — | ||
| 2004–05 | Lausitzer Füchse | GER-2 | 35 | 11 | 15 | 26 | 205 | 4 | 0 | 2 | 2 | 6 | ||
| 2005–06 | Lausitzer Füchse | GER-2 | 33 | 11 | 17 | 28 | 165 | — | — | — | — | — | ||
| AHL totals | 224 | 18 | 38 | 56 | 1055 | 8 | 0 | 1 | 1 | 35 | ||||
| NHL totals | 12 | 0 | 1 | 1 | 34 | — | — | — | — | — | ||||