Yechiel Michel ben Eliezer ha-Kohen (Hebrew: יְחִיאֵל מִיכל בֵּן אֱלִיעֶזֶר הָכֹּהֵן; died 10 or 12 June 1648), also known as the Martyr of Nemirov,[1] was a kabbalist and rabbi at Nemirov, Russia who was murdered during the Cossacks' Uprising of 1648.