Introduction: Pediculosis capitis is an infestation of the skin and head hair caused by Pediculus humanus var. capitis. This disease occurs among children, especially those aged 3-11 years or elementary school-age children. Several factors which can promote the spread of pediculosis capitis infestation are socio-economic factors, knowl- edge level, poor personal hygiene, residential density, and individual characteristics (age and sex). This study aimed to determine the association between individual characteristics, personal hygiene, and environmental sanitation to pediculosis capitis in students of Mentokok Elementary School, West Praya, Central Lombok. Methods: This research was analytical observational study with cross-sectional approach using purposive sampling technique with sample of 46 students. Bivariate analysis with Chi-square test was used for data analysis. If the p-value ï‚£ 0.05 then H0 was rejected, suggesting a significant relationship between variables. Meanwhile, if p-value > 0.05 then Ha was rejected, suggesting no significant relationship between variables. In this study data were collected by direct examination of the respondents’ hair, questionnaire sheet and observation form. Results: From 46 samples, 30 (65.2%) were infected with pediculosis capitis, while 16 (34.8%) were pediculosis capitis-negative. Statistical results with the Chi-square test showed a significant association between age and pediculosis capitis with p=0.038 (p <0.05). There was sig- nificant association between sex and pediculosis capitis with p=0,000 (p <0.05). There was a significant associa- tion between personal hygiene and pediculosis capitis with p=0.021 (p <0.05) and significant association between residential density and pediculosis capitis with p=0.023 (p <0.05). Conclusion: There was asignificant association between individual characteristics, personal hygiene and environmental sanitation to pediculosis capitis in students of Mentokok Elementary School, West Praya, Central Lombok.