To provide a resin composition for laser engraving that gives a relief printing plate having excellent chemical resistance and that has excellent removability of engraving residue, a relief printing plate precursor using the resin composition for laser engraving, a process for making a relief printing plate using the precursor, and a relief printing plate obtained thereby.

The resin composition includes: (Component A) a filler having an ethylenically unsaturated group; (Component B) a polymerizable compound having an ethylenically unsaturated group; and (Component C) a polymerization initiator.