Lice (Insecta, Phthiraptera) are permanent ectoparasites of birds and mammals. Despite having a rich avifauna in Iran, limited number of studies have been conducted on lice fauna of wild birds in this region. This study was carried out to identify lice species of passerine birds in East of Iran. A total of 106 passerine birds of 37 species were captured. Their bodies were examined for lice infestation. Fifty two birds (49.05%) of 106 captured birds were infested. Overall 465 lice were collected from infested birds and 11 lice species were identified as follow: Brueelia chayanh on Common Myna (Acridotheres tristis), B. nebulosa on Common Starling (Sturnus vulgaris), B. subtilis on House Sparrow (Passer domesticus) and Tree Sparrow (P. montanus), B. gobiensis on Desert Finch (Carduelis obsoleta), Philopterus pallescens on Great Tit (Parus major), P. montani and Campanulotes compar on Tree Sparrow, P. fringillae on Common Chaffinch (Fringilla coelebs), House Sparrow and Chestnut-shouldered Petronia (Petronia xanthocollis), Sturnidoecus refractariolus on House Sparrow and Common Rock-Sparrow (Pe. petronia), S. ruficeps on House Sparrow and S. rostratus on Corn Bunting (Emberiza calandra) and Red-headed Bunting (Emberiza bruniceps). All these lice species were recorded for the first time in Iran.

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