| City Cup | |
| Year: | 1956–57 |
| Num Teams: | 12 |
| Defending Champions: | Glenavon |
| Winners: | Glentoran (10th win) |
| Second: | Distillery |
| Matches: | 69 |
| Goals: | 291 |
| Prev Season: | 1955–56 |
| Next Season: | 1957–58 |
The 1956–57 City Cup was the 52nd edition of the City Cup, a cup competition in Northern Irish football.[1]
The tournament was won by Glentoran for the 10th time. They defeated Distillery 2–1 in a test match at Solitude after both teams finished level on points in the group standings.[2] [3]