| Position: | Defence |
| Shoots: | Left |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lb: | 195 |
| Played For: | Atlanta Flames Los Angeles Kings Toronto Maple Leafs Winnipeg Jets |
| Birth Date: | March 1, 1955 |
| Birth Place: | Edmonton, Alberta, Canada |
| Draft: | 8th overall |
| Draft Year: | 1975 |
| Draft Team: | Atlanta Flames |
| Wha Draft: | 15th overall |
| Wha Draft Year: | 1975 |
| Wha Draft Team: | Houston Aeros |
| Career Start: | 1975 |
| Career End: | 1981 |
Richard Sidney Mulhern (born March 1, 1955) is a Canadian former professional ice hockey defenceman. Mulhern was born in Edmonton, Alberta and raised in Beaconsfield, Quebec.
Before playing in the NHL, he played for the Sherbrooke Castors. Also, around the end of his career he played with the Tulsa Oilers and Dallas Black Hawks, of the Central Hockey League.
Mulhern started his National Hockey League career with the Atlanta Flames in 1975, after being picked eighth overall in the 1975 Amateur Draft and being first sent to Tulsa where he played 56 games during the 1975-76 season.
He also played for the Toronto Maple Leafs, Los Angeles Kings, and Winnipeg Jets. He retired after the 1981 season, due to declining play, which came from back injuries and surgery.
In his career, he played in 303 NHL games. He scored 27 goals.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | G | A | Pts | PIM | GP | G | A | Pts | PIM | ||
| 1973–74 | Sherbrooke Castors | 40 | 8 | 37 | 45 | 96 | — | — | — | — | — | |||
| 1974–75 | Sherbrooke Castors | QMJHL | 70 | 26 | 64 | 90 | 142 | 13 | 2 | 18 | 20 | 19 | ||
| 1975–76 | Atlanta Flames | NHL | 12 | 1 | 0 | 1 | 4 | — | — | — | — | — | ||
| 1975–76 | Tulsa Oilers | CHL | 56 | 7 | 26 | 33 | 84 | 9 | 1 | 6 | 7 | 6 | ||
| 1976–77 | Atlanta Flames | NHL | 79 | 12 | 32 | 44 | 80 | 3 | 0 | 2 | 2 | 5 | ||
| 1977–78 | Atlanta Flames | NHL | 79 | 9 | 23 | 32 | 47 | 2 | 0 | 1 | 1 | 0 | ||
| 1978–79 | Atlanta Flames | NHL | 37 | 3 | 12 | 15 | 22 | — | — | — | — | — | ||
| 1978–79 | Los Angeles Kings | NHL | 36 | 2 | 9 | 11 | 23 | 1 | 0 | 0 | 0 | 0 | ||
| 1979–80 | Los Angeles Kings | NHL | 15 | 0 | 3 | 3 | 16 | — | — | — | — | — | ||
| 1979–80 | Toronto Maple Leafs | NHL | 26 | 0 | 10 | 10 | 11 | 1 | 0 | 0 | 0 | 0 | ||
| 1980–81 | Dallas Black Hawks | CHL | 20 | 7 | 11 | 18 | 16 | — | — | — | — | — | ||
| 1980–81 | Winnipeg Jets | NHL | 19 | 0 | 4 | 4 | 14 | — | — | — | — | — | ||
| 1980–81 | Tulsa Oilers | CHL | 5 | 2 | 3 | 5 | 0 | — | — | — | — | — | ||
| NHL totals | 303 | 27 | 93 | 120 | 217 | 7 | 0 | 3 | 3 | 5 | ||||