To provide a resin composition for laser engraving which exhibits excellent tensile strength and scum removing properties and obtains a relief printing plate free from missing dots, and to provide a relief printing original plate for laser engraving, a method for manufacturing a relief printing original plate for laser engraving, a manufacturing method for a relief printing plate and a relief printing plate.

The resin composition for laser engraving contains (component C1) an ethylenic unsaturated compound, (component C2) at least either a compound with a hydrolyzable silyl group and/or a silanol group, (component A) binder polymer, and (component B) polymer having, as side chain, at least one kind of either an acid group and/or an alkali decomposable group being an acid group obtained through alkali hydrolysis.