To provide a lock device for a cabinet door, by which both door panels are mutually locked simply and surely and appearance is also improved.

A pair of the door panels 3a and 3b are annexed to the front opening 2 of a cabinet body 1 so as to be opened and closed in a double swinging type, handle pieces 4a and 4b having approximately the same shape respectively are projected from surfaces in the vicinity of the mutually opposed open- close side end sections of both door panels 3a and 3b, a lock piece 5 rotated while being interlocked with the rotary operation of the handle piece 4a positioned on the surface side of one door panel 3a is projected from the rear of the door panel 3a, and a lock receiver 6, with which the lock piece 5 is engaged detachably, is projected from the rear of the other door panel 3b.