2002–03 Eerste Klasse was a Dutch association football season of the Eerste Klasse.
Saturday champions were: A: Ajax Amateurs B: SV ARC C: Achilles Veen D: Sparta Nijkerk E: Oranje Nassau Groningen
Sunday champions were: A: AFC '34 B: SVVSMC C: RKSV Nuenen D: RKSV Groene Ster E: Rohda Raalte F: SC Joure