A contour measurement apparatus and a contour measurement method for measuring a contour of a poultry carcass, and a deboning device for a poultry carcass are provided. The contour measurement apparatus includes: a fixing jig on which the poultry carcass is placed and fixed; a conveyer forming a conveyance path for conveying the fixing jig; a contact element being supported movably in an upper and lower direction within a two-dimensional plane, and being able to be in contact with a measurement target portion of the poultry carcass; an upper and lower direction position sensor for detecting a position of the contact element in the upper and lower direction; a fixing jig position sensor for detecting a position of the fixing jig moving in a conveying direction; and a contour calculation unit for calculating a contour of a surface of the poultry carcass on the two-dimensional plane based on detected values.