Heart failure (HF) in children differs from that in adults in many respects. The causes and clinical presentations may differ considerably among children of different age groups and between children and adults. The time of onset of HF holds the key to the etiological diagnosis. Clinical presentation of HF in younger children can be nonspecific requiring heightened degree of suspicion. The overall outcome with HF is better in children than in adults as HF in children is commonly due to structural heart disease and reversible conditions which are amenable to therapy. The principles of management include treatment of the cause, correction of any precipitating event, and treatment of systemic or pulmonary congestion. Though HF in adults has been the subject of extensive research and generation of evidence-based guidelines, there is a scarcity of evidence base in pediatric HF.