| Position: | Defence |
| Shoots: | Right |
| Height Ft: | 5 |
| Height In: | 8 |
| Weight Lb: | 172 |
| Birth Date: | February 5, 1945 |
| Birth Place: | , Quebec, Canada |
| Career Start: | 1965 |
| Career End: | 1977 |
| Draft: | Undrafted |
| Played For: | Pittsburgh Penguins Buffalo Sabres Kansas City Scouts Birmingham Bulls (WHA) |
Jean-Guy Lagace (born February 5, 1945) is a Canadian former professional ice hockey defenceman. He played in the National Hockey League with the Pittsburgh Penguins, Buffalo Sabres, and Kansas City Scouts; in addition, he played one season in the World Hockey Association with the Birmingham Bulls.
In his NHL career, Lagace played in 197 games, scoring nine goals and adding 39 assists. In the WHA, Lagace played in 78 games, scoring two goals and adding 25 assists.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1965–66 | Muskegon Mohawks | IHL | 66 | 10 | 33 | 43 | 63 | 4 | 0 | 0 | 0 | 8 | ||
| 1966–67 | Muskegon Mohawks | IHL | 72 | 14 | 25 | 39 | 162 | — | — | — | — | — | ||
| 1967–68 | Muskegon Mohawks | IHL | 65 | 14 | 48 | 62 | 157 | 9 | 2 | 5 | 7 | 42 | ||
| 1968–69 | Pittsburgh Penguins | NHL | 17 | 0 | 1 | 1 | 14 | — | — | — | — | — | ||
| 1968–69 | Amarillo Wranglers | CHL | 49 | 9 | 19 | 28 | 96 | — | — | — | — | — | ||
| 1969–70 | Baltimore Clippers | AHL | 68 | 7 | 21 | 28 | 138 | 4 | 1 | 2 | 3 | 2 | ||
| 1970–71 | Buffalo Sabres | NHL | 3 | 0 | 0 | 0 | 2 | — | — | — | — | — | ||
| 1970–71 | Salt Lake Golden Eagles | WHL | 39 | 2 | 13 | 15 | 83 | — | — | — | — | — | ||
| 1970–71 | Amarillo Wranglers | CHL | 19 | 1 | 15 | 16 | 61 | — | — | — | — | — | ||
| 1971–72 | Hershey Bears | AHL | 61 | 11 | 30 | 41 | 117 | 4 | 0 | 0 | 0 | 8 | ||
| 1972–73 | Hershey Bears | AHL | 37 | 7 | 14 | 21 | 54 | — | — | — | — | — | ||
| 1972–73 | Pittsburgh Penguins | NHL | 31 | 1 | 5 | 6 | 32 | — | — | — | — | — | ||
| 1973–74 | Pittsburgh Penguins | NHL | 31 | 2 | 6 | 8 | 34 | — | — | — | — | — | ||
| 1974–75 | Hershey Bears | AHL | 6 | 0 | 7 | 7 | 8 | — | — | — | — | — | ||
| 1974–75 | Pittsburgh Penguins | NHL | 27 | 1 | 8 | 9 | 39 | — | — | — | — | — | ||
| 1974–75 | Kansas City Scouts | NHL | 19 | 2 | 9 | 11 | 22 | — | — | — | — | — | ||
| 1975–76 | Kansas City Scouts | NHL | 69 | 3 | 10 | 13 | 108 | — | — | — | — | — | ||
| 1976–77 | Birmingham Bulls | WHA | 78 | 2 | 25 | 27 | 110 | — | — | — | — | — | ||
| WHA Totals | 78 | 2 | 25 | 27 | 110 | — | — | — | — | — | ||||
| NHL Totals | 197 | 9 | 39 | 48 | 251 | — | — | — | — | — | ||||