This survey, which was conducted over the course of 3 months in 2009, was designed to investigate what the medical residents of one university hospital in Seoul think about DNAR orders. A total of 214 out of 468 residents (45.7%) answered the questionnaire. Participants were divided into two groups according to their experiences with taking DNAR order. There was no difference between the two groups on the definition of DNAR, its limitations, and when to issue DNAR orders. However, the two groups showed different opinions concerning who should be consulted in obtaining consent for DNAR and whether or not it was necessary to review DNAR orders. Residents who were experienced in giving DNAR orders felt more inclined to discuss the situation with the patient`s family members rather than the patient herself and thought that DNAR orders would not need to be reconsidered. These differences in opinion may result from the different experiences the two groups of residents had in actually ordering DNAR in the clinical setting. This study shows that more research and discussion is needed in order to establish the limitations and precise definition of DNAR orders.