| Position: | Right wing |
| Shoots: | Right |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lb: | 185 |
| Birth Date: | November 20, 1957 |
| Birth Place: | Winnipeg, Manitoba, Canada |
| Career Start: | 1977 |
| Career End: | 1995 |
| Draft: | 45th overall |
| Draft Year: | 1977 |
| Draft Team: | St. Louis Blues |
| Wha Draft: | 29th overall |
| Wha Draft Year: | 1977 |
| Wha Draft Team: | Quebec Nordiques |
| Played For: | Edmonton Oilers Pittsburgh Penguins |
Thomas Irwin Roulston (born November 20, 1957) is a Canadian former professional ice hockey right winger. He was drafted by the St. Louis Blues in the third round, 45th overall, of the 1977 NHL amateur draft. He was also drafted by the World Hockey Association's Quebec Nordiques in the 1977 WHA Amateur Draft (third round, 29th overall); however, he never played in that league.
Roulston appeared in 195 regular-season National Hockey League games with the Edmonton Oilers and Pittsburgh Penguins. He scored 47 goals and 49 assists.
| Team | League | GP | GP | G | A | Pts | PIM | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1975–76 | Spruce Grove Mets | AJHL | 5 | 3 | 1 | 4 | 4 | — | — | — | — | — | ||
| 1975–76 | Edmonton Oil Kings | WCHL | 1 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||
| 1975–76 | Winnipeg Clubs | WCHL | 60 | 18 | 17 | 35 | 56 | 6 | 2 | 2 | 4 | 4 | ||
| 1976–77 | Winnipeg Monarchs | WCHL | 72 | 56 | 53 | 109 | 35 | 7 | 5 | 3 | 8 | 23 | ||
| 1977–78 | Port Huron Flags | IHL | 50 | 17 | 36 | 53 | 24 | 16 | 17 | 7 | 24 | 10 | ||
| 1977–78 | Salt Lake Golden Eagles | CHL | 21 | 2 | 1 | 3 | 2 | — | — | — | — | — | ||
| 1978–79 | Dallas Black Hawks | CHL | 73 | 26 | 29 | 55 | 57 | 9 | 6 | 6 | 12 | 11 | ||
| 1979–80 | Houston Apollos | CHL | 72 | 29 | 41 | 70 | 46 | 6 | 2 | 4 | 6 | 4 | ||
| 1980–81 | Edmonton Oilers | NHL | 11 | 1 | 1 | 2 | 2 | — | — | — | — | — | ||
| 1980–81 | Wichita Wind | CHL | 69 | 63 | 44 | 107 | 93 | 18 | 15 | 11 | 26 | 44 | ||
| 1981–82 | Edmonton Oilers | NHL | 35 | 11 | 3 | 14 | 22 | 5 | 1 | 0 | 1 | 2 | ||
| 1981–82 | Wichita Wind | CHL | 30 | 22 | 28 | 50 | 46 | — | — | — | — | — | ||
| 1982–83 | Edmonton Oilers | NHL | 67 | 19 | 21 | 40 | 24 | 16 | 1 | 2 | 3 | 0 | ||
| 1983–84 | Edmonton Oilers | NHL | 24 | 5 | 7 | 12 | 16 | — | — | — | — | — | ||
| 1983–84 | Pittsburgh Penguins | NHL | 53 | 11 | 17 | 28 | 8 | — | — | — | — | — | ||
| 1984–85 | Baltimore Skipjacks | AHL | 78 | 31 | 39 | 70 | 48 | 15 | 4 | 8 | 12 | 6 | ||
| 1985–86 | Pittsburgh Penguins | NHL | 5 | 0 | 0 | 0 | 2 | — | — | — | — | — | ||
| 1985–86 | Baltimore Skipjacks | AHL | 73 | 38 | 49 | 87 | 38 | — | — | — | — | — | ||
| 1986–87 | Salzburger EC | Austria | 19 | 18 | 19 | 37 | 28 | — | — | — | — | — | ||
| 1986–87 | EV Landshut | Germany | 20 | 23 | 12 | 35 | 25 | — | — | — | — | — | ||
| 1987–88 | Sportbund DJK Rosenheim | Germany | 21 | 10 | 13 | 23 | 34 | — | — | — | — | — | ||
| 1988–89 | HC Fiemme Cavalese | Italy | 36 | 40 | 47 | 87 | 26 | — | — | — | — | — | ||
| 1988–89 | HC Davos | NLA | 1 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1994–95 | Wichita Thunder | CHL | 23 | 11 | 19 | 30 | 8 | 11 | 13 | 11 | 24 | 10 | ||
| NHL totals | 195 | 47 | 49 | 96 | 74 | 21 | 2 | 2 | 4 | 2 | ||||