To provide a polymerizable composition and a crosslinkable resin molding giving a crosslinked resin molding and a laminate that have both excellent impact resistance and heat resistance, and the crosslinked resin molding and the laminate.

The polymerizable composition contains: a norbornene-based monomer; a metathesis polymerization catalyst; a chain transfer agent; a crosslinking agent; and a block copolymer comprising at least two polymer blocks (A) and at least one polymer block (B). The polymer block (A) contains an aromatic vinyl monomer unit at the rate of 80 wt.% or more based on the total repeating units in the polymer block (A) and has a weight-average molecular weight (Mw) of 5,000-300,000. The polymer block (B) contains a conjugated diene monomer unit at the rate of 80 wt.% or more based on the total repeating units in the polymer block (B). The crosslinkable resin molding is obtained by impregnating reinforcing fibers with the polymerizable composition and then performing bulk polymerization. The crosslinked resin molding is obtained by performing crosslinking of the crosslinkable resin molding. The laminate is obtained by including the crosslinkable resin molding or the crosslinked resin molding as a layer.