Purpose: The purpose of this study was to analyze the migration patterns of new nurses and experienced nurses and to identify the factors influencinginter-regional migration for solving regional imbalances of clinical nurses in South Korea. Methods: This study involved a secondary analysisof data from the Health Insurance Review and Assessment Service (HIRA). Data were analyzed using descriptive statistics and multiple logisticregression analysis. Results: New nurses tended to migrate from Kyunggi to Seoul. However, experienced nurses tended to migrate from Seouland Chungchung to Kyunggi. Significant predictors of inter-regional migration among new nurses were location and nurse staffing grade of hospitals. Significant predictors of inter-regional migration among experienced nurses were location, hospital type, nurse staffing grade, ownershipof hospitals and age of nurses. Conclusion: Inter-regional migration occupied a small portion of total hospital movement among clinical nurses. The regional imbalances of nurses were not caused by the migration from non-metropolitan areas to Seoul. Nurse shortage problems in thesmall and medium hospitals of the non-metropolitan area can be solved only through improvement of work environment.