Worldwide, tobacco is the leading cause of preventable death, resulting in approximately 5 million deaths annually. Nurses are keenly positioned to work toward reducing tobacco-related illness and deaths. Therefore, guided by the health belief model, the purpose of this study was to explore the smoking behavior, beliefs, smoking cessation education practices, and existing smoking policies at the institutions of a sample of practicing oncology nurses in Canada, Japan, Korea, Taiwan, United Kingdom, and the United States. A 27-item structured survey, designed for this study in English and translated and reverse translated by the Asian countries, was distributed to a convenience sample of nurses attending oncology meetings in each country. Totally 759 surveys were completed and analyzed using descriptive statistics. Principle findings indicate that 4.5% of these nurses currently smoke, although 23.3% reported smoking previously. While many nurses (74%) reported frequently assessing the smoking status of patients, only 50% reported discussing cessation with their patients that smoke. Although the majority (80%) reported feeling comfortable with asking their patients about smoking, only 23% felt it was the nurse's role. The findings indicate that while internationally oncology nurses recognize the importance of smoking cessation, significant room for improvement exists in translating this into practice.