Abstract: The school-aged children immunization coverage in Tangerang City in 2014 was low on coverage during School Immunization Month program reaching only 90.84% which was lower than the national target. The complete immunization status for the children was affected by mother awareness. This study was conducted to find out the dominant contributing factors that influenced mother awareness of immunization for their school-aged children in the city of Tangerang using cross-sectional analysis.