In the conversation, normally the participants do not pay attention or are aware of the turn-taking that each one should consider. Therefore, the objective of this study was to investigate turn-taking patterns which are IRF (Initiation-Response-Feedback) in students' NUDC. The participants of this study were the NUDC teams from classes 2020A and 2021C of the English Study Program of UNIKA St. Paulus, Ruteng. The data were collected using the qualitative method to describe the IRF pattern in students' debates. The procedure for collecting the data was recording the debate, transcribing the spoken text, and analyzing and identifying the IRF pattern used by each debater. The result of the study was the dominant pattern used is IRF with 12 times (44.4%), the second is I with 8 times (29.6%, the third is RF with 6 times (22.2%), while the lowest is IR with only used one time (3.7%). The recommendation for the next researchers is to study the correlation between understanding the debate motion and turn-taking in debate.