To provide a fluorinated compound capable of obtaining a cured product which is excellent in heat resistance and mold release and has a high Abbe number; a curable composition containing such a compound; and a cured product which is excellent in heat resistance and mold release and has a high Abbe number. The fluorinated compound is represented by the following formula (A): [Z—OCH2CF2CF2CF2OCFHCF2—X—]nQ  (A) where n is an integer of at least 1, Q is a n-valent organic group, X is —O—, —NH— or —S—, and Z is a group having at least one polymerizable functional group.