| Full name | Ragbi klub Sisak | |
|---|---|---|
| Founded | 15 February 1970 (as RK Student) | |
| Region | Sisak, Croatia | |
| Ground(s) | Stadion Metalac | |
| President | Dubravko Pešut | |
| Coach(es) | Mirsad Žerić | |
| League(s) | Croatian Rugby Championship | |
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RK Sisak is a Croatian rugby club in Sisak.
The club was founded on 15 February 1970 as RK Student by a couple of university students.