A double-locking door lock apparatus (100) for a vehicle includes a latch mechanism (10), an inside open lever (21), an outside open lever (22), an open link (23), a lock mechanism switching the open link (23) between unlocked and locked states, and a double lock mechanism switching a vehicle door between a double locked state and a double-lock cancelled state, the lock mechanism including an active lever (25) shifting the open link (23) between the unlocked and locked states, and the double lock mechanism including a double lock lever (27) shifted from an unset position to a set position by a setting operation of a double-locking member to restrain the open link (23) from shifting from the locked state to the unlocked state, the double lock lever (27) shifted from the set position to the unset position by an unsetting operation of the double-locking member to allow the open link (23) to shift from the locked state to the unlocked state.