S. G. Ball Cup
| Sport | Rugby league |
|---|---|
| Instituted | 1965 |
| Inaugural season | 1965 |
| Number of teams | 16 |
| Country | Australia |
| Premiers | Sydney (Easts) (5th title) (2025) |
| Most titles | Parramatta (14 titles) |
| Website | S. G. Ball Cup |
| Related competition | Harold Matthews Cup Laurie Daley Cup Mal Meninga Cup |
The S. G. Ball Cup is a junior rugby league football competition played predominantly in New South Wales, between teams made up of male players aged under 19. Teams from Canberra and Melbourne, and Auckland also participate. Prior to the COVID-19 pandemic in New South Wales a team from Perth (West Coast) also participated. The competition is administered by the New South Wales Rugby League, and includes both junior representative teams of NRL and NSWRL clubs that do not field a team in the NRL.
The S. G. Ball Cup is named after S. G. "George" Ball, one of the five people responsible for the formation of South Sydney, and who was club secretary for over fifty years.