This study was carried out on a young European Shag (Phalacrocorax aristotelis) caught in the sea in Akçay, Balıkesir, in August 2015. The lice collected from the European Shag were put into 70% alcohol solution and were mounted to slides with Canada balsam after being made transparent in 10% potassium hydroxide. The lice Eidmanniella pellucida and Pectinopygus brevicornis were determined as a result of the microscopic examination of the 54 louse specimens. This study is the first for the louse species related to the European Shag in Turkey. Additionally, the genus Eidmanniella and the species Eidmanniella pellucida and Pectinopygus brevicornis are reported for the first time from Turkey.