The present invention provides a resin composition capable of securely adhering multiple members in a short time without having to establish a long aging process. There is provided a resin composition comprising: (1) a urethane (meth)acrylate; (2) at least one selected from a group consisting of (meth)acrylates having a phosphate group, (meth)acrylic silane coupling agents, and (meth)acrylates having an isocyanate group; and (3) a (meth)acrylate having an epoxy group.