Malnutrition is common in infants and children with chronic liver disease (CLD) and may easily be underestimated by clinical appearance alone. The cause of malnutrition in CLD is multifactorial, although insufficient dietary intake is probably the most important factor and is correctable. Fat malabsorption occurs in cholestatic disorders, and one must also consider any accompanying fat-soluble vitamin and essential fatty acid deficiencies. The clinician should proactively evaluate, treat, and re-evaluate response to treatment of nutritional deficiencies. Because a better nutritional state is associated with better survival before and after liver transplantation, aggressive nutritional management is an important part of the care of these children.