The purpose of this study was to investigate nurses' knowledge of pain and pain management with respect to elderly persons. Registered nurses at several general hospitals and nursing homes were surveyed by questionnaire concerning their knowledge of pain management in the elderly. The findings indicated a significant knowledge deficit in this area. There were also significant differences in knowledge levels between general hospital nurses and those working in nursing homes. We conclude that more education about pain management in elderly patients is needed for nurses. This deficit needs to be addressed in both undergraduate nursing programs and hospital in-service courses. Presently, the majority of patients entering hospitals are aged 65 years and over. Hence, nurses in all areas of care, not just specifically those working in aged care facilities, need a sound knowledge of pain management of the elderly to facilitate compassionate and effective nursing care.