Sussex Senior Cup
| Organising body | Sussex County Football Association |
|---|---|
| Founded | 1882 |
| Region | Sussex |
| Number of teams | 50 (2016–17 season) |
| Current champions | Horsham (9th title) |
| Most successful club(s) | Worthing (22 titles) |
The Sussex Senior Challenge Cup, more commonly known as the Sussex Senior Cup, is an annual association football knockout cup competition for men's football clubs in the English county of Sussex. The cup is the county senior cup of the Sussex FA and is both the longest-running and most prestigious cup competition in Sussex football. For sponsorship purposes the trophy is also known as the Sussex Transport Senior Challenge Cup, after a new sponsorship deal was agreed in 2023.
First played for in the 1882–83 season, shortly after the founding of the Sussex County Football Association in September 1882, the first club to hold the cup was Brighton Rangers. Other winning teams in the cup's early history were Burgess Hill, Lancing College and Eastbourne. The cup is played by men's football teams in Sussex; a concurrent Sussex Women's Cup has been held for women's teams in Sussex since 1995.
The team with most title wins in the competition's history is Worthing, but Sussex's sole Premier League team, Brighton & Hove Albion, has been the most successful in recent years. Bognor Regis Town won the competition a record five times in succession between 1980 and 1984.
The winning club also qualifies to play in the Sussex FA Community Shield match, traditionally the opening match each season in Sussex football. Horsham are the current holders of the Sussex Senior Cup, having won the cup for the second year running by beating Littlehampton Town 1—0 in the 2025 final.