In the area of Zadar County, there is a number of olive ecotypes (Olea europaea L.) that olive growers have spread in existing olive groves thanks to their favorable agronomic characteristics. Such phenotypes generally have not been evaluated or investigated in detail, and represent a potentially new olive variety. Therefore, the aim of this final paper is to describe the morphological characteristics of local olive phenotypes Plavica and Krupna drobnica, and to compare them with cvs. Oblica and Leccino which can be considered reference olive varieties due to their prevalence and known agronomic characteristics, in the Biograd area. The comparison of the selected phenotypes was made on the basis of measurements carried out including fruits and leaves of four grown trees for each phenotype according to the internationally recognized method (IOC method). The obtained data is analyzed by analysis of variance (ANOVA), and the differences between the measured values are determined by the Tukey feedback test. Phenotype of Plavica corresponds cv. Leccino in 6 out of 7 categories, and cv. Oblica in 3 categories. Phenotype Krupna drobnica corresponds with cv. Leccino in 5 out of 7 categories, and with cv. Oblica in 2 categories. Considering the already known characteristics of cvs. Leccino and Oblica, and based on the proportion of mesocarp which is higher than cv. Leccino and lesser than cv. Oblica, it can be concluded that phenotypes Plavica and Krupna drobnica have the potential for successful cultivation. Detailed research on the quality and quantity of oil as well as resistance to harmful organisms should be continued.