MCur / Department of Advanced Nursing Science / Background: Globally, malnutrition among children is one of the most challenging and critical public health problem, and it remains one of the most common causes of morbidity and mortality among children under the age of 5 years. There is no exception for the Vhembe District. Purpose: The study determined the perceptions of young mothers regarding causes of malnutrition in children under the age of 5 years in the Vhembe District, of the Limpopo Province. Methodology: This study used qualitative, exploratory, descriptive and contextual design to collect data among young mothers regarding causes of malnutrition in children under 5 years. Twelve young mothers were sampled using probability, simple random sampling at selected hospitals population. In-depth individual interviews were used to collect data and analysed using Tesch’s steps. Measures to ensure trustworthiness and ethical consideration were adhered to throughout the study. Results: Three themes emerged from the analysed data, namely: Young mothers’ perceived causes of malnutrition, young mother’s beliefs about malnutrition, and health care seeking actions for a malnourished child. Recommendations: This study recommend a strategies to integrate young mothers into the health promotion regarding their understanding and experiences about malnutrition. Policies on child nutrition should be reviewed regularly in the Vhembe District for prevention and management of malnutrition in children under 5. / NRF