Vaccine-Preventable Diseases (VPD) have been recognized among the main threat to the life of children &amp;lt;5 five years. Globally, about 1.5 million young children die from VPD annually. Vaccination has averted close to 3 million deaths annually. We aimed to establish factors associated with completion of routine vaccination among children aged between 24–35 months old within Narok East Sub-County.