Immunisation is one of the most cost-effective interventions to prevent and control life-threatening infectious diseases among children. Nonetheless, rates of routine vaccination of children in low- and middle-income countries (L&MICs) are strikingly low or stagnant.. Identifying effective strategies for improving coverage and timeliness of routine child immunisation is therefore a priority for many L&MIC governments and the global health community at large. This evidence gap map (EGM) report presents the findings of a systematic evidence mapping exercise to characterise the evidence base on routine child immunisation in L&MICs.