This descriptive cross-sectional study at Military Hospital Roorkee assessed guardians' knowledge, attitude, and practice (KAP) regarding child immunization using Schwartz’s KAP model (1976). A total of 380 participants were selected via convenience sampling. Data were collected through structured interviews and questionnaires. Findings revealed 81.1% had fully immunized their children per government schedule. While knowledge and practice were average, attitudes were positive but showed resistance to additional vaccines. Significant associations were found between knowledge, practice, and socio-demographic factors like age, education, and income. The study recommends targeted educational interventions for lower-income and less-educated groups to improve immunization compliance.