Background: Immunization is crucial for children under the age of five as it plays a vital role in protecting them against various preventable diseases. Compliance to immunization can be influenced by various factors, including individual, social, cultural, and systemic factors. Here are some commonly recognized factors influencing compliance to immunization are level of understanding about the importance, benefits, and safety of vaccines and it is very important to analyze how far parents are compliance to immunization schedule. Methods: Non-Experimental cross sectional survey design was used for present study. The sample for the study consists of 100 Parents of under-five children visiting pediatric OPD, selected by purposive sampling technique method, data was collected by self-structured questionnaires, Structured 5 Point Likert’s scale and check list. The data analysis done by using descriptive and inferential statistics. Results: Findings of the study regarding basic level of knowledge of immunization revealed that 65(65%), 20(20%) and 15(15%) Parents had Average, Good, Poor Knowledge. And regarding compliance rate, 85% of Parents are having delayed compliance to immunization schedule followed by this 15% of Parents having on time compliance and none of parents were in state of no Compliance and about parents attitude regarding immunization shows majority (98%) of parents had highly favourable attitude towards the compliance to immunization schedule, followed by only 2% of parents are of moderate attitude and No parents of Unfavourable attitude.No association found with selected socio-demographic variables and also with determining factors. Conclusion: The study concludes that the majority of the Parents even though having average & favorable attitude and good knowledge but when it comes to compliance rate majority of parents are of delayed compliance to immunization schedule because of parent’s busy schedule, child illness and blind beliefs. We recommend that
Patil et al. (Tue,) studied this question.