The present invention relates to a multi-adaptor for a vehicle wiper, which interconnects an arm and a blade for wiping window glass, wherein both side walls of the arm have stopper pieces and a free end, wherein a selective hook protrudes from the free end. The multi-adaptor for a vehicle wiper comprises: a main body; a coupling portion formed at one end of the main body so as to enable the free end of the arm to be coupled thereto; and support portions formed at both side walls of the other end of the main body to support the stopper pieces of the arm. Accordingly, the multi-adaptor of the present invention significantly increases arm-coupling force as compared to conventional adaptors, and thus preemptively prevents the arm from being separated from the adaptor.