A caliper for a disc brake, comprising: - two side walls spaced apart from each other, which delimit a disc space to accommodate a portion of a brake disc, - means for fastening the caliper to a vehicle, - a connecting structure which extends straddling the disc space and connects the side walls to each other, - at least one pad seat formed in each of said side walls and adapted to accommodate at least one friction pad, - thrust means secured to one or both of the side walls and adapted to bias the friction pads against the brake disc to tighten it, wherein the caliper has an inlet side on which the rotating brake disc enters into the disc space, and an outlet side on which the rotating brake disc exits from the disc space, wherein the caliper comprises a snowplow structure firmly connected to the connecting structure on at least one of the inlet and outlet sides and having: - a free transverse edge, protruding from the connecting structure towards the outside of the caliper and extending transversely to a plane of the brake disc and facing away from the caliper, - two guide edges which extend from two opposite side end portions of the transverse edge converging towards each other so as to form together a cusp-shaped guide, characterized by comprising a protection plate protruding from the connecting structure towards the outside of the caliper and extending transversely to the plane of the brake disc, so as to cover a hydraulic duct of the caliper on a radially outer side thereof.. - two side walls spaced apart from each other, which delimit a disc space to accommodate a portion of a brake disc, - means for fastening the caliper to a vehicle, - a connecting structure which extends straddling the disc space and connects the side walls to each other, - at least one pad seat formed in each of said side walls and adapted to accommodate at least one friction pad, - thrust means secured to one or both of the side walls and adapted to bias the friction pads against the brake disc to tighten it, wherein the caliper has an inlet side on which the rotating brake disc enters into the disc space, and an outlet side on which the rotating brake disc exits from the disc space, wherein the caliper comprises a snowplow structure firmly connected to the connecting structure on at least one of the inlet and outlet sides and having: - a free transverse edge, protruding from the connecting structure towards the outside of the caliper and extending transversely to a plane of the brake disc and facing away from the caliper, - two guide edges which extend from two opposite side end portions of the transverse edge converging towards each other so as to form together a cusp-shaped guide, - a free transverse edge, protruding from the connecting structure towards the outside of the caliper and extending transversely to a plane of the brake disc and facing away from the caliper, - two guide edges which extend from two opposite side end portions of the transverse edge converging towards each other so as to form together a cusp-shaped guide, characterized by comprising a protection plate protruding from the connecting structure towards the outside of the caliper and extending transversely to the plane of the brake disc, so as to cover a hydraulic duct of the caliper on a radially outer side thereof..