2011–12 Eerste Klasse was a Dutch association football season of the Eerste Klasse.
Saturday champions were: A: Ajax Amateurs B: VV Smitshoek C: SteDoCo D: DTS Ede E: HZVV
Sunday champions were: A: HFC EDO B: Quick Den Haag C: RKVV Brabantia D: RKSV Schijndel E: VV De Bataven F: VV Nieuw Buinen