| Position: | Right Wing |
| Shoots: | Right |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lb: | 200 |
| Played For: | Birmingham Bulls Quebec Nordiques Boston Bruins |
| Birth Date: | October 23, 1958 |
| Birth Place: | Nouvelle, Quebec, Canada |
| Draft: | 233rd overall |
| Draft Year: | 1978 |
| Draft Team: | Montreal Canadiens |
| Career Start: | 1978 |
| Career End: | 1986 |
Louis Sleigher (born October 23, 1958) is a Canadian former professional ice hockey player who played 62 games in one season with the Birmingham Bulls in the World Hockey Association and 194 games over seven seasons in the National Hockey League with the Quebec Nordiques and the Boston Bruins between 1978 and 1986.
In the 1984 NHL Playoffs, Sleigher was a major part of the Good Friday Massacre (French: French: la bataille du Vendredi saint), in which he knocked Montreal Canadiens player Jean Hamel unconscious with a sucker-punch during a bench-clearing brawl. The blow eventually contributed to the end of Hamel's playing career. After playing six games for Quebec the following season, Sleigher was dealt to the Boston Bruins where he played two more seasons before retiring.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1976–77 | Chicoutimi Sagueneens | QMJHL | 70 | 53 | 48 | 101 | 49 | 8 | 5 | 3 | 8 | 9 | ||
| 1977–78 | Chicoutimi Sagueneens | QMJHL | 71 | 65 | 54 | 119 | 113 | — | — | — | — | — | ||
| 1978–79 | Birmingham Bulls | WHA | 62 | 26 | 12 | 38 | 46 | — | — | — | — | — | ||
| 1979–80 | Quebec Nordiques | NHL | 2 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1979–80 | Syracuse Firebirds | AHL | 58 | 28 | 15 | 43 | 37 | 1 | 0 | 1 | 1 | 15 | ||
| 1980–81 | Erie Blades | EHL | 50 | 39 | 29 | 68 | 129 | 8 | 6 | 4 | 10 | 12 | ||
| 1981–82 | Quebec Nordiques | NHL | 8 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||
| 1981–82 | Fredericton Express | AHL | 59 | 32 | 34 | 66 | 37 | — | — | — | — | — | ||
| 1982–83 | Quebec Nordiques | NHL | 51 | 14 | 10 | 24 | 49 | 4 | 0 | 0 | 0 | 4 | ||
| 1982–83 | Fredericton Express | AHL | 12 | 8 | 2 | 10 | 9 | — | — | — | — | — | ||
| 1983–84 | Quebec Nordiques | NHL | 44 | 15 | 19 | 34 | 32 | 7 | 1 | 1 | 2 | 42 | ||
| 1984–85 | Quebec Nordiques | NHL | 6 | 1 | 2 | 3 | 0 | — | — | — | — | — | ||
| 1984–85 | Boston Bruins | NHL | 70 | 12 | 19 | 31 | 45 | 5 | 0 | 0 | 0 | 4 | ||
| 1985–86 | Boston Bruins | NHL | 13 | 4 | 2 | 6 | 20 | 1 | 0 | 0 | 0 | 14 | ||
| WHA totals | 62 | 26 | 12 | 38 | 46 | — | — | — | — | — | ||||
| NHL totals | 194 | 46 | 53 | 99 | 146 | 17 | 1 | 1 | 2 | 64 | ||||