The kinetic resolution of chiral diastereomeric hydroperoxy homoallylic alcohols 1 by horseradish peroxidase-catalyzed asymmetric reduction affords the optically active (R,R) or (R,S) allylic diols 2 and (S,S) or (S,R) hydroperoxy homoallylic alcohols 1 in high enantiomeric excess (up to 99%).