The 2011–12 EHF Women's Champions League knockout stage ran from 31 March to 13 May 2012. The top two placed teams from the main round advanced to the semifinals.
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Note 1: Győri Audi ETO KC played their home match on Veszprém Aréna in Veszprém as it has a greater capacity than their own Magvassy Mihály Sportcsarnok from Győr.
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Note 1: Győri Audi ETO KC played their home match on Veszprém Aréna in Veszprém as it has a greater capacity than their own Magvassy Mihály Sportcsarnok from Győr.