| Competition: | Premijer Liga |
| Season: | 2002–03 |
| Winners: | Leotar 1st Premier League title 1st Bosnian title |
| Relegated: | Kozara Jedinstvo Velež Mladost (G) Budućnost Bosna |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Leotar |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Željezničar Sarajevo |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Sloboda |
| League Topscorer: | Emir Obuća (24 goals) |
| Matches: | 380 |
| Total Goals: | 1072 |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
The 2002–03 Premier League of Bosnia and Herzegovina was the third season since its establishment and distinguishes itself from previous seasons by having expanded the country-wide league to include the clubs from Republika Srpska in the competition. This season began on 3 August 2002 and ended on 24 May 2003.
The league was won by FK Leotar after a dramatic last round where they defeated away team Rudar Ugljevik (2–1). Široki Brijeg defended successfully against the defending home champions Željezničar (1–0).
FK Leotar Trebinje (Coach: - Mile Jovin)
Squad: