The 2002–03 First League of the Federation of Bosnia and Herzegovina season was the third since its establishment.
| Club | City | Stadium | 2001–02 season | |
|---|---|---|---|---|
| Boljava | Drinovci | Second League | ||
| Čapljina | Čapljina | First League | ||
| Elektrobosna | Jajce | Second League | ||
| Famos | Hrasnica | Second League | ||
| Fruti | Čelić | First League | ||
| Grude | Grude | Premier League | ||
| Iskra | Bugojno | Premier League | ||
| Kiseljak | Kiseljak | First League | ||
| Ljubuški | Ljubuški | First League | ||
| Olimpik | Sarajevo | Premier League | ||
| Radnički | Lukavac | First League | ||
| Rudar | Kakanj | First League | ||
| SAŠK Napredak | Sarajevo | First League | ||
| Stolac | Stolac | First League | ||
| Tomislav | Tomislavgrad | First League | ||
| TOŠK | Tešanj | Second League | ||
| Travnik | Travnik | First League | ||
| Troglav | Livno | Premier League | ||
| Vitez | Vitez | First League |