Abstract: The present invention relates to an apparatus for centering slaughtered carcasses. The apparatus is meant to be used at the cleaving of slaughtered carcasses, for instance, of pigs, which have been cut open where a stationary support rail is provided for suspending the carcass from its hind legs, said apparatus comprising a first member for engagement with the hind legs of the carcass for symmetrically pressing said hind legs against a stationary horizontal first support rail for initially centering the carcass. Furthermore, the apparatus comprises a second support rail adapted for preventing rotation of the carcass preferably in the nature of a horizontal second support rail, and a second member for engagement with the lower jaw of the carcass, said second member being pivotally movable along a centering line in order to finally center the carcass and being operable by means of a power device.