| Substitute Gold Cup | |
| Year: | 1942–43 |
| Num Teams: | 6 |
| Defending Champions: | Glentoran |
| Winners: | Linfield (1st win) |
| Second: | Belfast Celtic |
| Matches: | 30 |
| Goals: | 132 |
| Prev Season: | 1941–42 |
| Next Season: | 1943–44 |
The 1942–43 Substitute Gold Cup was the 3rd edition of the Substitute Gold Cup, a cup competition in Northern Irish football. It replaced the Gold Cup, which was suspended due to World War II.[1]
The tournament was won by Linfield for the 1st time.[2] [3]