Aims and Objectives To findthe prevalence of asthma and associated factors for asthma among 3-6 years old children. Methods A community based cross-sectional study was conducted between February July 2013inUdupiTaluk, Karnataka. Total of 337 participants were included in the study. A semi-structured questionnaire was used to collect the data fromparents and guardians of 3-6 years old children. Univariate and multivariate logistic methods were used to calculate adjusted and unadjusted odds ratio. Results Based on the symptoms reported, the prevalence of asthma in children was found to be 9.2% in this study. Family history of Asthma, monthly income and history of allergy were reported as significant (P<0.05) associated factors of asthma among 3-6 years children. Conclusions A continuous surveillance for identification of asthma related symptoms and associated risk factors among children through field level health workers would facilitate in early diagnosis and treatment of children with asthma in appropriate healthcare facilities.