Vehicle door lock device

A vehicle door lock device comprising:

• a lock/unlock unit including a lock/unlock mechanism that switches whether to transmit a door opening operation on a door to a latch mechanism;
• and
• a transmission unit that transmits a lock/unlock operation with a key to the lock/unlock unit, wherein
• the lock/unlock unit includes
• a main case that houses therein the lock/unlock mechanism and supports the latch mechanism;
• an input member having a rotation shaft passing through the main case, being coupled to the lock/unlock mechanism in the main case, and having an external coupling part outside the main case;
• and
• a cover that closes an opening of the main case,
• the transmission unit includes
• a coupling member that couples a turned member to the external coupling part, the turned member rotating integrally with a rotor of a key cylinder, and
• a sub case that houses therein the coupling member, and
• the external coupling part protrudes from the main case in a vehicle outside direction in a state where the main case is attached to the door, and
• the sub case has an adjustment unit that is capable of adjusting a relative position in a vehicle upper/lower direction with respect to the main case.