A multi-adapter for a vehicle wiper, having a joining portion coupled to a wiper blade with a pair of side plates protruding from the joining portion such that the side plates are parallel to each other. The side plates have a plurality of pin coupling portions formed at the pair of side plates, and to which wiper arm with pins of different sizes are selectively coupled. A plurality of protrusions are formed, on at least one of the pair of the side plates so as to maintain a gap between the wiper arm and the pair of side plates.