Malnutrition commonly complicates the course of patients with cirrhosis and has a multifactorial etiology. Despite the important role that nutrition plays in the prognosis of those with cirrhosis, the nutrition assessment process can be challenging in this setting. A number of tools are available to aid in the nutrition assessment of the cirrhotic patient; however, none are without limitations. Although the assessment process can be difficult, the ability to properly manage the nutrient needs of the patient presents an additional set of challenges because of the catabolic nature of the disease process and common occurrence of anorexia and other symptoms leading to poor oral intake. In this review, the nutrition assessment tools and general guidelines for nutrition management in patients with advanced liver disease are discussed to promote recognition of the nutrition issues affecting this patient population and lead to their improved survival and reduced morbidity.