Purpose: To investigate the practices, attitudes, and confidence of nurses in the performance of oral health checkups in order to develop an educational oral health checkup training programme for nurses. Materials and Methods: A cross-sectional questionnaire survey was distributed to nurses (n = 184) who worked in a hospital and an affiliated long-term care facility in Japan from September to October in 2016. The questionnaire survey investigated their practices, attitudes and confidence in the performance of oral health checkups for elderly patients who were in their care and the factors that were associated with the performance of oral health checkups. Results: A total of 143 (77.7%) nurses participated in this study. Almost half (51.7%) performed oral health checkups for elderly patients. More than 60% examined the lip, tongue and tongue coating, gingiva and oral mucosa, and oral cleanliness; however only 32.4% examined the present teeth and 8.1% examined the saliva. Approximately 90% of the nurses felt that all health professionals should perform oral health checkups for elderly patients who were in their care. Their confidence of the oral examination was statistically significantly associated with their performance of oral health checkups for elderly patients. Conclusions: This is the first survey to investigate the practices, attitudes, and confidence of nurses in the performance of oral health checkups. These findings will contribute to the development of a training programme for nurses who perform oral health checkups in elderly patients. Keywords: dental examination, nurse, oral assessment, oral health checkup