To obtain the subject composition excellent in adhesivity and giving cured products good in peelability or solubility in peeling liquids by compounding an ethylenic unsaturated double bond-having compound with a chain transfer agent, etc.

This photocurable composition comprises (A) an ethylenic unsaturated double bond-having compound, (B) a chain transfer agent, and (C) a photopolymerization initiator. The component A is e.g. a (meth)acrylate having a (meth)acryloyl group, especially isobornyl (meth)acrylate. The component B is e.g. thioglycerol. The component C is e.g. 2,4,6- trimethylbenzoyldiphenylphosphine oxide.