The aim of the study is to determine the most appropriate enterprises by revealing the innovation performances of the companies operating in the hazelnut sector in Ünye. In this study, weights of the criteria and sub-criteria, which are thought to have an effect on the innovation performance of the enterprises, were determined by analytical hierarchy process (AHP). TOPSIS method has been used to rank the alternatives. In this way, TOPSIS aims to establish a degree of importance for each alternative enterprise and to determine the highest degree of importance as the most appropriate enterprise in terms of innovation performance. As a result of the study, it was determined that the main criterion that most affects innovation performance in hazelnut sector is the financing function, which is followed by production function, R&D function, management function, and marketing function, respectively. According to the results obtained using the TOPSIS method, the best alternative was Enterprise 4 in terms of innovation performance and the worst alternative was Enterprise 1.