Entomopathogenic fungi of the genus Beauveria (Hypocreales) are essential natural regulators of insect populations, characterized by their ability to infect a wide range of hosts, with an increased mortality rate. Using species of the genus Beauveria as biological control agents offer numerous advantages, including high efficacy, harmlessness, and compatibility with other IPM (Integrated Pest Management) methods, being considered among the most promising alternatives for pest control [1]. Beauveria genus has received considerable com-mercial attention in the last 30-35 years as a source of strains for the mass production of bi-opesticides. As a result, it has determined an increased interest in improving their properties and spectrum of use in biological control, driving numerous studies focused on investigating the supplementary beneficial properties such as anti-phytopathogenic potential. Currently, Beauveria spp. are considered the most promising microorganisms for the development of complex biological control strategies, through their profiling as endophytes, plant growth promoters, beneficial colonizers of the rhizosphere, and most importantly, in vitro, and in vivo antagonists of significant plant pathogens [1]. As an outcome of the previously conducted research, native fungal strains of Beauveria spp. with the potential to be used as biological control agents were isolated and characterized. The strains of entomopathogenic fungi of the genus Beauveria show an intrinsic variability in their ability to inhibit or antagonistical-ly influence phytopathogen growth, development, and viability. Thus, the investigation and precise selection of the most effective strains are required to develop biopesticides with the potential to be applied in complex biological control [4]. The work aimed to investigate the antagonistic properties of some local strains of fungi from the Beauveria genus for sub-sequent complex biological protection of crops.