It is an object of the present invention to provide an articulator that can more simply configure a coupling mechanism between a lower jaw support portion and an upper jaw support portion at a joint portion. An articulator 1 includes a first support portion (10) a second support portion (20) and a joint portion (30) that couples the first support portion (10) and the second support portion (20). The joint portion (30) includes: a pair of projecting portions (31) and an engaging support portion (32). The projecting portion (31) and the engaging support portion (32) are attractable to each other by way of magnetic force.
