| Position: | Right wing |
| Shoots: | Right |
| Height Ft: | 5 |
| Height In: | 7 |
| Weight Lb: | 160 |
| Played For: | Montreal Canadiens New York Rangers |
| Birth Date: | April 11, 1914 |
| Birth Place: | Niagara Falls, Ontario, Canada |
| Death Place: | Mission Viejo, California, U.S. |
| Career Start: | 1933 |
| Career End: | 1949 |
Felix Anthony "Gus" Mancuso (April 11, 1914 – August 16, 2003) was a Canadian professional ice hockey forward who played 47 games in the National Hockey League for the Montreal Canadiens and New York Rangers between 1937 and 1943. The rest of his career, which lasted from 1933 to 1949, was spent in various minor leagues.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1930–31 | Niagara Falls Cataracts | OHA | 3 | 1 | 2 | 3 | 0 | — | — | — | — | — | ||
| 1931–32 | Niagara Falls Cataracts | OHA | 4 | 1 | 0 | 1 | 2 | 5 | 3 | 0 | 3 | 2 | ||
| 1932–33 | Niagara Falls Cataracts | OHA | 4 | 6 | 1 | 7 | 4 | 2 | 1 | 0 | 1 | 0 | ||
| 1932–33 | Niagara Falls Cataracts | M-Cup | — | — | — | — | — | 3 | 5 | 2 | 7 | 4 | ||
| 1933–34 | Niagara Falls Cataracts | OHA Sr | 24 | 9 | 1 | 10 | 20 | 2 | 0 | 0 | 0 | 0 | ||
| 1934–35 | Hershey B'ars | EAHL | 21 | 16 | 5 | 21 | 31 | 9 | 6 | 4 | 10 | 4 | ||
| 1935–36 | Hershey B'ars | EAHL | 40 | 24 | 12 | 36 | 37 | 8 | 3 | 0 | 3 | 18 | ||
| 1936–37 | Hershey Bears | EAHL | 48 | 14 | 14 | 28 | 17 | 4 | 1 | 0 | 1 | 2 | ||
| 1937–38 | Montreal Canadiens | NHL | 17 | 1 | 1 | 2 | 4 | — | — | — | — | — | ||
| 1937–38 | New Haven Eagles | IAHL | 32 | 6 | 4 | 10 | 17 | 2 | 0 | 1 | 1 | 0 | ||
| 1938–39 | Montreal Canadiens | NHL | 2 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||
| 1938–39 | New Haven Eagles | IAHL | 42 | 4 | 14 | 18 | 47 | — | — | — | — | — | ||
| 1939–40 | Montreal Canadiens | NHL | 7 | 0 | 0 | 0 | 6 | — | — | — | — | — | ||
| 1939–40 | New Haven Eagles | IAHL | 47 | 9 | 20 | 29 | 41 | 3 | 0 | 1 | 1 | 0 | ||
| 1940–41 | New Haven Eagles | AHL | 56 | 17 | 25 | 42 | 12 | 2 | 0 | 0 | 0 | 2 | ||
| 1941–42 | New Haven Eagles | AHL | 46 | 19 | 29 | 48 | 24 | 2 | 0 | 0 | 0 | 0 | ||
| 1942–43 | New York Rangers | NHL | 21 | 6 | 8 | 14 | 13 | — | — | — | — | — | ||
| 1942–43 | New Haven Eagles | AHL | 30 | 10 | 16 | 26 | 13 | — | — | — | — | — | ||
| 1945–46 | Providence Reds | AHL | 15 | 3 | 5 | 8 | 4 | — | — | — | — | — | ||
| 1945–46 | Hollywood Wolves | PCHL | 6 | 2 | 4 | 6 | 0 | 9 | 3 | 2 | 5 | 10 | ||
| 1946–47 | Hollywood Wolves | PCHL | 59 | 27 | 17 | 44 | 33 | 7 | 1 | 1 | 2 | 9 | ||
| 1947–48 | Los Angeles Monarchs | PCHL | 51 | 17 | 15 | 32 | 15 | 4 | 0 | 2 | 2 | 2 | ||
| 1948–49 | Los Angeles Monarchs | PCHL | 22 | 3 | 3 | 6 | 11 | — | — | — | — | — | ||
| IAHL/AHL totals | 268 | 68 | 113 | 181 | 158 | 9 | 0 | 2 | 2 | 2 | ||||
| NHL totals | 47 | 7 | 9 | 16 | 23 | — | — | — | — | — | ||||