Dairy farmers have been identified having high risk for knee pain. Squatting position when milking cows create awkward knee posture and high compression on knee joint that could lead to knee injury and degenerative diseases on knee joint. This study aims to identify the prevalence of knee pain among dairy farmers and the association of squatting position and other factors with knee pain among dairy farmers in West Java. A cross sectional study on 117 respondents was conducted at Unit Pelaksana Teknis Daerah (UPTD) Balai Pengembangan Ternak Sapi Perah dan Hijauan Makanan Ternak (BPT-SP HPT) Cikole, Lembang from May through June 2017 (total population). Instruments used were standardized interview form and Knee Injury and Osteoarthritis Outcome Score (KOOS) questionnaire. Working position was observed. Chi Square and Logistic Regression was conducted with SPSS Statistics 20.0 program. In this study, 88% dairy farmers had knee pain, mostly with mild knee pain. Association was found between knee pain and squatting (ORc=7.36). Determinants for knee pain are working period 6-10 years with ORA=7.35 (95% CI 1.25-42.95, p=0.027) and working period >10 tahun with ORA= 26,09 (95% CI 1.24-547.59, p=0.036). Prevalence of knee pain among dairy farmers was 88%. The study suggests that knee pain among dairy farmers had association with squatting position. Working period >5 years was identified as determinant factor. It is necesary to improve dairy farmers working condition to reduce exposure of risk factors during working period.