Optically pure hetero‐organic catalysts that bear a hydroxyl moiety, a stereogenic sulfinyl group, and a chiral amine moiety, are highly efficient in the asymmetricaziridination of unsaturated aldehydes and lead to the desired chiral products in high yields (up to 93 %) with enantiomeric excess values up to 92 %. The influence of the stereogenic centers at the sulfinyl sulfur atom and in the amine