In this study, 81 species belonging to seventeen families of Heteroptera from Khorasan Razavi province of Iran were identified. Ten species of them were identified as the first record for Iran and 20 species were also identified for the first time from Khorasan Razavi province. The remaining 51 species have been reported from Khorasan province and their additional distribution areas were given in this paper. Among these species Eurydema ventrale (Kolenati, 1846), Rhaphigaster brevispina (Horváth, 1889), Oxycarenus hyalinipennis (Costa, 1847), Gerris costae (Herrich- Schaeffer, 1850) and Holcostethus capitatus (Wolff, 1801) were determined as prominent species, respectively.

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