OBJECTIVE: This study was carried out to detect mosquito (Diptera:Culicidae) fauna in the Western Black sea Region between June-August of 2014. METHODS: In this study, mosquito specimens were captured by using Onderstepoort type light traps in 6 provinces (Bartın, Bolu, Düzce, Karabük, Kastamonu and Zonguldak) of West Black Sea Region between June-August of 2014. RESULTS: In total, 1843 mosquitoes were captured. 1529 of 1843 mosquitoes could be identified to species and 13 species; Ae. caspius, Ae. flavescens, Ae. pullatus, Ae. vexans, An. claviger, An. hyrcanus, An. maculipennis s.l., An. plumbeus, An. sacharovi, Cx. theileri, Cx. pipiens, Cs. annulata, Cs. longierolata belonging to four genera; (Aedes (Ae.), Anopheles (An.), Culex (Cx.) and Culiseta (Cs.) were detected in this study. Ae. caspius (734), An. maculipennis s.l. (384), Cx. theileri (215) and Cx. pipiens (85) were detected as dominant species, respectively. The highest mosquito specimens were caught in July (1412) and the lowest in June (91). The highest number mosquitoes were collected in Kastamonu (78). CONCLUSION: Thirteen mosquito species were detected in this study in Western Black Sea region of Turkey. Highest number of mosquito samples were cought in July and August, respectively. The dominant species were Ae. caspius, An. maculipennis s.l., Cx. theileri and Cx.pipiens.