1998–99 Croatian Football Cup
| Tournament details | |
|---|---|
| Country | Croatia |
| Teams | 48 |
| Defending champions | Croatia Zagreb |
| Final positions | |
| Champions | Osijek (1st title) |
| Runners-up | Cibalia |
| Tournament statistics | |
| Top goal scorer(s) | Željko Pakasin (5) |
The 1998–99 Croatian Football Cup was the eighth edition of Croatia's football knockout competition. Croatia Zagreb were the defending champions, and it was won by Osijek. This was the first season when a preliminary round was played, with top-level clubs entering the competition in the first round proper.