| Position: | Goaltender |
| Played For: | Detroit Red Wings |
| Catches: | Left |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lb: | 185 |
| Birth Date: | 1916 10, mf=yes |
| Birth Place: | Niagara Falls, Ontario, Canada |
| Career Start: | 1941 |
| Career End: | 1948 |
John Thomas "Mum" Mowers (October 29, 1916 – December 7, 1995) was a Canadian ice hockey goaltender who played for the Detroit Red Wings of the National Hockey League (NHL) between 1940 and 1947. In 1943 he won the Vezina Trophy for allowing the fewest goals against in the NHL.
Mowers started his hockey career with the Niagara Falls of the OHA Senior A League. He had an excellent amateur career before playing with the Detroit Pontiacs of the MOHL and the Omaha Knights of the American Hockey Association.
His 1.93 goals against average with the Omaha Knights inspired Jack Adams to sign Mowers for the 1941 season with the Detroit Red Wings. Veteran Tiny Thompson was not playing up to expectations so Mowers was put in net instead. He was so impressive in his first season, that he almost won both the Vezina Trophy and the Calder Memorial Trophy, a feat that has only been accomplished by Frank Brimsek. He lost the Calder to Johnny Quilty and the Vezina to Turk Broda that season.
Next season, Mowers goals against average increased as the Detroit Red Wings plummeted to 5th place. He regained his skills in the playoffs leading the Red Wings all the way to the Stanley Cup Finals against the Toronto Maple Leafs. The Red Wings won the first 3 games but the Leafs made a remarkable comeback winning the next 4 games. Mowers let in 19 goals in the 4 losses.
Despite the defeat, Mowers and the Red Wings won the Stanley Cup next season. Mowers was also awarded the Vezina Trophy for his efforts.
In 1943, he enlisted in the army and did not play again until 1947. When he came back he found his job lost to Harry Lumley. He appeared in 2 more games in 1948 with the Indianapolis Capitals before retiring.
| Regular season | Playoffs | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | W | L | T | Min | GA | GAA | GP | W | L | T | Min | GA | SO | GAA | |||
| 1935–36 | Niagara Falls Cataracts | OHA-Sr. | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ||
| 1935–36 | Niagara Falls Cataracts | A-Cup | — | — | — | — | — | — | — | — | 2 | 0 | 2 | 0 | 120 | 12 | 0 | 6.00 | ||
| 1936–37 | Niagara Falls Cataracts | OHA-Sr. | 18 | — | — | — | 1080 | 54 | 0 | 3.00 | 9 | — | — | — | 540 | 30 | 0 | 3.33 | ||
| 1937–38 | Niagara Falls Cataracts | OHA-Sr. | 16 | — | — | — | 960 | 50 | 0 | 3.12 | 7 | 7 | 0 | 0 | 420 | 16 | 0 | 2.29 | ||
| 1938–39 | Niagara Falls Cataracts | OHA-Sr. | 20 | — | — | — | 1200 | 63 | 4 | 3.15 | — | — | — | — | — | — | — | — | ||
| 1939–40 | Detroit Pontiacs | MOHL | 20 | — | — | — | 1200 | 84 | 0 | 4.20 | — | — | — | — | — | — | — | — | ||
| 1939–40 | Omaha Knights | AHA | 21 | 16 | 5 | 0 | 1272 | 41 | 3 | 1.93 | 9 | 4 | 5 | 0 | 610 | 21 | 1 | 2.07 | ||
| 1940–41 | Detroit Red Wings | NHL | 48 | 21 | 16 | 11 | 3040 | 102 | 4 | 2.01 | 9 | 4 | 5 | 0 | 561 | 20 | 0 | 2.14 | ||
| 1941–42 | Detroit Red Wings | NHL | 47 | 19 | 25 | 3 | 2880 | 144 | 5 | 3.00 | 12 | 7 | 5 | 0 | 720 | 38 | 0 | 3.17 | ||
| 1942–43 | Detroit Red Wings | NHL | 50 | 25 | 14 | 11 | 3010 | 124 | 6 | 2.47 | 10 | 8 | 2 | 0 | 679 | 22 | 2 | 1.94 | ||
| 1943–44 | Toronto RCAF | TNDHL | 9 | 3 | 6 | 0 | 540 | 53 | 0 | 5.89 | — | — | — | — | — | — | — | — | ||
| 1946–47 | Detroit Red Wings | NHL | 7 | 0 | 6 | 1 | 420 | 29 | 0 | 4.14 | 1 | 0 | 1 | 0 | 40 | 5 | 0 | 7.50 | ||
| 1947–48 | Indianapolis Capitals | AHL | 2 | 1 | 1 | 0 | 120 | 7 | 0 | 3.50 | — | — | — | — | — | — | — | — | ||
| NHL totals | 152 | 65 | 61 | 26 | 9350 | 399 | 15 | 2.56 | 32 | 19 | 13 | 0 | 2000 | 85 | 2 | 2.55 | ||||