| Position: | Defence |
| Played For: | New York Americans Detroit Red Wings Montreal Maroons |
| Shoots: | Left |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lb: | 188 |
| Birth Date: | 1909 1, mf=yes |
| Birth Place: | Kenora, Ontario, Canada |
| Career Start: | 1929 |
| Career End: | 1939 |
John James Gallagher (January 19, 1909 — September 16, 1981) was a Canadian professional ice hockey player who played 204 games in the National Hockey League with the Montreal Maroons, Detroit Red Wings, and New York Americans between 1930 and 1939. He won the Stanley Cup with Detroit in 1937.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1925–26 | Kenora Thistles | TBSHL | 16 | 4 | 3 | 7 | 12 | — | — | — | — | — | ||
| 1926–27 | Kenora Thistles | TBJHL | — | — | — | — | — | — | — | — | — | — | ||
| 1928–29 | Kenora Thistles | TBJHL | 16 | 4 | 3 | 7 | 12 | — | — | — | — | — | ||
| 1929–30 | Montreal AAA | MCHL | 10 | 3 | 0 | 3 | 25 | 2 | 0 | 0 | 0 | 0 | ||
| 1929–30 | Montreal CNR | MCHL | — | — | — | — | — | — | — | — | — | — | ||
| 1929–30 | Montreal AAA | Al-Cup | — | — | — | — | — | 9 | 3 | 3 | 6 | 26 | ||
| 1930–31 | Montreal Maroons | NHL | 35 | 4 | 2 | 6 | 35 | 2 | 0 | 0 | 0 | 0 | ||
| 1931–32 | Montreal Maroons | NHL | 19 | 1 | 0 | 1 | 18 | — | — | — | — | — | ||
| 1931–32 | Windsor Bulldogs | IHL | 29 | 6 | 4 | 10 | 48 | 6 | 2 | 1 | 3 | 13 | ||
| 1932–33 | Montreal Maroons | NHL | 7 | 1 | 0 | 1 | 0 | — | — | — | — | — | ||
| 1932–33 | Detroit Red Wings | NHL | 34 | 3 | 5 | 8 | 48 | 4 | 1 | 1 | 2 | 4 | ||
| 1932–33 | Detroit Olympics | IHL | 3 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||
| 1934–35 | Windsor Bulldogs | IHL | 26 | 3 | 5 | 8 | 8 | — | — | — | — | — | ||
| 1935–36 | Detroit Olympics | IHL | 44 | 4 | 3 | 7 | 40 | 6 | 3 | 0 | 3 | 2 | ||
| 1936–37 | New York Americans | NHL | 9 | 0 | 0 | 0 | 8 | — | — | — | — | — | ||
| 1936–37 | Pittsburgh Hornets | IAHL | 31 | 6 | 7 | 13 | 22 | 5 | 0 | 0 | 0 | 0 | ||
| 1936–37 | Detroit Red Wings | NHL | 10 | 1 | 0 | 1 | 0 | 10 | 1 | 0 | 1 | 17 | ||
| 1937–38 | New York Americans | NHL | 46 | 3 | 6 | 9 | 18 | 6 | 0 | 2 | 2 | 6 | ||
| 1938–39 | New York Americans | NHL | 43 | 1 | 5 | 6 | 22 | 2 | 0 | 0 | 0 | 0 | ||
| NHL totals | 203 | 14 | 18 | 32 | 151 | 24 | 2 | 3 | 5 | 27 | ||||