Child malnutrition is a significant issue in Ethiopia, with high prevalence rates. However, there is limited information on the rural‑urban disparities in child malnutrition of all its forms (stunting, wasting, and underweight) in the country. Therefore, this study aimed to address this gap by analysing data from the 2019 Ethiopian Demographic Health Survey (EDHS). This study examined the rural‑urban child malnutrition gaps in Ethiopia using an extended Oaxaca-Blinder decomposition technique. The analysis reveals significant ruralurban disparities in prevalence rates of wasting, underweight, and stunting. The findings highlighted that children in rural areas are more malnourished than their urban counterparts. Additionally, the study identified key determinants of these disparities, including maternal and parental education, household economic status, women’s age at first birth, childbirth size, and working status of women. The results also indicate that institutional delivery, household size, and dependency ratio contribute to widening the rural‑urban disparities in child malnutrition. This study highlighted the importance of targeted policies and interventions to address these disparities and reduce child malnutrition at the national level.