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Noise-induced hearing loss (NIHL) is the common occupational disease especially for fishermen who using boat for fishing. NIHL is a permanent hearing abnormality caused by prolonged exposure to loud noise and the first symptom is normally the inability to hear high-pitched sounds. The Regulation of Indonesian Ministry of Health 2016, mentioned the safe range of noise maximum is 88 dB with the maximum time of exposure is 4 hours. Meanwhile, the noise caused by boat engine is 77,64-97,8 dB. The objective of this study was to assess the risk factor of boat engine noise towards NIHL in fishermen. Audiometric examination was done to evaluate the samples with normal baseline, 25 dB. The study sample comprised 70 volunteers which devided within 2 groups (fisherman and 35 local resident-non fisherman). This study was conducted in Kedonganan Village, Bali. The study results showed that 77% (27 of 35) of fisherman is diagnosed as NIHL with working hour average ±4,86 hours and ±16 years period of exposure. Group with non fishermen showed 2 NIHL condition eithout any exposure from boat-engine (p<0.05). It is concluded that the the noise from boat engine can cause hearing loss. The fisherman have to wear earplug or earmuff or headset to reduce the risk of noise induced hearing loss.