Purpose: This study was designed to investigate the levels of anxiety, depression, physical symptoms, and supportive care needs in patients with hematologic malignancy and to identify predictive factors of supportive care needs. Methods: The data were collected from 100 subjects undergoing treatments during 2010 in Korea. The questionnaires included the Hospital Anxiety-Depression Scale, the M. D. Anderson Symptom Inventory, and the Supportive Care Needs Survey-Short Form 34. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation, and stepwise multiple regression. Results: Forty percent of the subjects had anxiety and 58% had depression. Thirty-eight percent of the subjects reported to have moderate-to-severe levels of physical symptoms. The most severe physical symptom was lack of appetite, followed by fatigue and pain. In terms of supportive care needs, the health system and information domain showed the highest among all domains. Supportive care needs had a significant positive correlation with anxiety, depression, and physical symptoms. And its predictive factors were identified as anxiety, physical symptoms and marital status, with the explanatory power of 48.9%. Conclusion: These findings demonstrate that anxiety and physical symptoms should be assessed and treated to meet the supportive care needs of patients with hematologic malignancies.