A three-dimensional data distribution device includes: a communication unit that receives a transmission request, the transmission request being transmitted in accordance with a predetermined application and requesting transmission of three-dimensional model data, the three-dimensional model data indicating a three-dimensional shape of an object; and a controller that controls the transmission of the three-dimensional model data. The controller makes, based on the transmission request, at least one of a determination as to whether a first company is identical to a second company and a determination as to whether the first company has a partnership with the second company, the first company providing the predetermined application, the second company providing an equipment that has been used to generate the three-dimensional model data, and the controller controls the transmission of the three-dimensional model data in accordance with a result of the at least one of the determinations.