| Position: | Left wing |
| Shoots: | Left |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lb: | 175 |
| Played For: | Minnesota North Stars |
| Birth Date: | 1944 12, mf=yes |
| Birth Place: | Drummondville, Quebec, Canada |
| Death Place: | Springfield, Massachusetts, U.S. |
| Career Start: | 1961 |
| Career End: | 1974 |
Leo Edmond Thiffault (December 16, 1944 – July 1, 2018) was a Canadian professional ice hockey player who played five games in the National Hockey League with the Minnesota North Stars during the 1967–68 season, all in the playoffs. Thiffault and Sid McNabney are the only players to play five play-off games in the NHL without playing any regular-season games.[1] He died in 2018 at the age of 73.[2]
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1961–62 | Montreal Nationale | MMJHL | — | — | — | — | — | — | — | — | — | — | ||
| 1961–62 | Montreal Nationale | M-Cup | — | — | — | — | — | 2 | 0 | 0 | 0 | 8 | ||
| 1962–63 | Montreal Junior Canadiens | OHA | 50 | 9 | 9 | 18 | 64 | 10 | 1 | 1 | 2 | 2 | ||
| 1963–64 | Montreal Junior Canadiens | OHA | 55 | 23 | 38 | 61 | 44 | 17 | 7 | 12 | 19 | 22 | ||
| 1964–65 | Peterborough TPTs | OHA | 53 | 33 | 52 | 85 | 52 | 12 | 4 | 10 | 14 | 8 | ||
| 1964–65 | Quebec Aces | AHL | 2 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||
| 1965–66 | Houston Apollos | CHL | 69 | 19 | 26 | 45 | 55 | — | — | — | — | — | ||
| 1966–67 | Houston Apollos | CHL | 47 | 7 | 15 | 22 | 37 | 2 | 0 | 0 | 0 | 0 | ||
| 1966–67 | Cleveland Barons | AHL | 5 | 1 | 1 | 2 | 4 | — | — | — | — | — | ||
| 1967–68 | Memphis South Stars | CHL | 66 | 22 | 32 | 54 | 52 | 3 | 0 | 1 | 1 | 6 | ||
| 1967–68 | Minnesota North Stars | NHL | — | — | — | — | — | 5 | 0 | 0 | 0 | 0 | ||
| 1968–69 | Phoenix Roadrunners | WHL | 70 | 16 | 24 | 40 | 25 | — | — | — | — | — | ||
| 1972–73 | Phoenix Roadrunners | WHL | 70 | 12 | 35 | 47 | 57 | 5 | 1 | 0 | 1 | 5 | ||
| 1973–74 | Tulsa Oilers | CHL | 1 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1973–74 | Phoenix Roadrunners | WHL | 35 | 5 | 6 | 11 | 26 | 2 | 0 | 0 | 0 | 0 | ||
| CHL totals | 182 | 48 | 73 | 121 | 144 | 5 | 0 | 1 | 1 | 6 | ||||
| WHL totals | 175 | 33 | 65 | 98 | 108 | 7 | 1 | 0 | 1 | 5 | ||||
| NHL totals | — | — | — | — | — | 5 | 0 | 0 | 0 | 0 | ||||