The paper presents the results of the analysis of pomological-technological characteristics of 13 hazel cultivars present in production plantations in the area of Bosnia and Herzegovina (BIH). Through previous analysis of pomological characteristics of fruit in several hazel plantations it was noted that there was a possibility of erroneous cultivar denomination. These fruits are sold at the domestic market as hazels for consumption, as well as for confectionary and cosmetic industry. Due to the increasing interest of producers in BIH for hazel cultivation and the uncontrolled spread of seedlings by producers through the offshoots from the existing production plantations, a possibility has been created to establish a plantation with erroneous assortment and thus an inadequate cultivar composition, particularly in terms of pollination and fertilization. Therefore, a comparison was carried out of pomological characteristics of fruit and the content of oil in the kernel of 13 hazel cultivars from older plantations in BIH with cultivars from the Collection of Nuts in Maribor owned by the Biotechnical Faculty of Ljubljana. Based on the analysis conducted, a deviation of fruit characteristics of some cultivars was determined, compared to the standard features of cultivars by which names they were labelled. Cultivars labelled by the producer during the collection of samples as: ‘Istrian Round’, ‘Tonda di Giffoni 2’, ‘Hall´s Giant’ and ‘N.N.1’ were identified and they fully corresponded with their characteristics to the following cultivars: ‘Istrian Long’, ‘Mortarela’, ‘Fertile de Coutard’ and ‘Hall´s Giant’. The research also showed that the fruits of the examined cultivars in BIH according to their pomological properties are as good as the fruits of cultivars grown in other areas.