The Ulster Senior Cup is a knock-out competition for senior rugby union teams in the province of Ulster. It is administered by Ulster Rugby.
The most successful club is Queen's University with 23 wins. The current holders are City of Armagh RFC.
The winners compete with the other three provincial cup winners for the All-Ireland Cup.
Entry is currently restricted to rugby clubs from Ulster that play in the All-Ireland League.
| Club | Winners | Runners-Up | Total Finals | Last Title | |
|---|---|---|---|---|---|
| Queen's University | 24 | 19 | 43 | 2021-22 | |
| Instonians | 20 | 9 | 29 | 2023-24 | |
| North of Ireland | 18 | 18 | 36 | 1972-73 | |
| Ballymena | 14 | 11 | 23 | 2012-13 | |
| Dungannon | 10 | 7 | 17 | 2010-11 | |
| Collegians | 8 | 12 | 20 | 1982-83 | |
| Malone | 7 | 16 | 23 | 1991-92 | |
| C.I.Y.M.S. | 6 | 6 | 12 | 1977-78 | |
| Ballynahinch | 5 | 4 | 9 | 2022-23 | |
| Bangor | 3 | 5 | 8 | 1985-86 | |
| Belfast Harlequins | 3 | 2 | 5 | 2007-08 | |
| Ards | 2 | 0 | 2 | 1986-87 | |
| City of Armagh | 3 | 1 | 4 | 2019-20 | |
| Albion | 1 | 5 | 6 | 1888-89 | |
| City of Derry | 1 | 2 | 3 | 1999-2000 | |
| Knock | 1 | 2 | 3 | 1910-11 | |
| Lisburn | 1 | 1 | 2 | 1887-88 | |
| Banbridge | 0 | 1 | 1 | n/a | |
| Carrickfergus | 0 | 1 | 1 | n/a | |
| Civil Service | 0 | 1 | 1 | n/a | |
| Fortwilliam | 0 | 1 | 1 | n/a | |
| Holywood | 0 | 1 | 1 | n/a | |
| Rainey Old Boys | 0 | 1 | 1 | n/a |