PURPOSE: To facilitate locking operation and to improve the ability of protection against theft by providing a number lock for zippers, which comprises a zipper lock body with a built-in number lock device and zipper lock hocks, in a zipper body which loosely moves in accordance with the number set.

CONSTITUTION: A zipper number lock comprises a number lock set for setting a set of secret numbers, which comprises a key wheel 42, a dial wheel 43, a spring piece 44 and a number setting table 50, etc., a zipper body 1 having a part set comprising a normal lock piece 60 and a pushing spring 70 and zipper hocks 3. The principle of a lever is applied to the normal lock 60 so that a lock projection section 31 is inserted into the set groove 64 of the normal lock piece to be locked under any conditions, and a projected gear 63 is received in the gear groove 422 of the key wheel 42 by the rotation of the dial wheel 43 for lock releasing. In addition, the number setting table 50 is pressed to move the key wheel 42 for releasing the engagement with the dial wheel 43 so that new number setting becomes possible.