Abstract: A door lock assembly includes a door trim including a through hole, and a locking device that is disposed on a vehicular exterior side with respect to the door trim and locks and unlocks a vehicular door. The locking device includes a lock knob holder and a door lock knob. The lock knob holder has a tubular shape and two holes at two opposite ends and one of the two holes is adjacent to the through hole and another one is an insertion hole. The door lock knob has a bar shape and is disposed in the lock knob holder so as to be movable between an unlocked position and a locked position. The door lock assembly further includes an insertion guide portion disposed adjacent to the insertion hole and includes a guide surface having a width that increases as it extends away from the insertion hole.