A connector structure (3) includes a first connector (1) and a second connector (2). The outer housing (10) of the first connector (1) has: a lock mechanism (12) to be engaged with a counterpart housing (60) of the second connector (2) to restrict a rearward movement of the counterpart housing (60) in the fitting direction when fitting the first connector (1) and the second connector (2); a first unlocking mechanism (14) configured to disengage a lock mechanism (12) for the counterpart housing (60); and a second unlocking mechanism (18) located at a different position than the first unlocking mechanism (14) and configured to disengage the lock mechanism (12) independently of the first unlocking mechanism (14).