Management of fungal diseases of food crops and fruits is economically important. Recently, a greater effort has been given to development of safe management methods that pose less danger to humans and animals, with a focus on overcoming deficiencies of synthetic fungicides.Findings from the current investigation demonstrated the AgNPs with low toxicity and a broad spectrum of antimicrobial activity were also very effective against plant phytopathogenic fungi. However, the current study is based on in vitro petri dish evaluation: therefore, extrapolation of these findings to more general cases is limited. Still, data from this study provide valuable preliminary efficacy data on silver compounds for use in control of plant pathogens. In this study, we analyzed the inhibition effect of three different AgNPs(WA-CV WA13B. WA-AT-WB13R, and WA-PR-WB13R) against various plant pathogenic fungi in vitro. The results suggest that AgNPs are capable of inhibiting these pathogens however, results vary according to the concentration and type of AgNPs applied to pathogens. Most fungi showed a high inhibition effect at a 100 ppm concentration of silver nanoparticles. In addition, results inidcate that a higher inhibition rate was observed on PDA media, compared with others. Among AgNPs, WA-CV-WA13B showed the highest inhibition effect. In most cases, inhibition increased as the concentration of AgNPs increased. This could be due to the high density at which the solution was able to saturate and cohere to fungal hyphe and to deactivate plant pathogenic fungi. Reports on the mechanism of inhibitory action of silver ions on microorganisms have shown that upon treatment with Ag DNA loses its ability to replicate, resulting in inactivated expression of ribosomal subunit proteins, as