1998–99 Croatian First Football League
| Season | 1998–99 | 
|---|---|
| Champions | Croatia Zagreb 5th Croatian title 9th domestic title  | 
| Champions League | Croatia Zagreb Rijeka  | 
| UEFA Cup | Hajduk Split Osijek  | 
| Intertoto Cup | Varteks Hrvatski Dragovoljac  | 
| Matches played | 192 | 
| Goals scored | 541 (2.82 per match) | 
| Best Player | Miljenko Mumlek | 
| Top goalscorer | Joško Popović (21) | 
| Biggest home win | Varteks 7–0 Šibenik | 
| Biggest away win | Mladost 127 0–4 Croatia Zagreb | 
| Highest scoring | Zadarkomerc 5–3 Varteks | 
| Average attendance | 4,158 | 
← 1997–98   | |
The 1998–99 Croatian First Football League was the eighth season of the Croatian top-level football league since its establishment.