PURPOSE: This study aimed to establish a contemporary, standardized Korean version of the Sports Concussion Assessment Tool 6th edition, characterized by superior face validity and reliability.METHODS: Translation and cultural adaptation involved seven stages, namely initial translation, integration of translation, back translation, validation with five expert committees, pre-testing with 12 rugby athletes, finalization, and a test-retest with 30 rugby and American-football athletes. Alternative tests were conducted for the Months In Reverse Order Test due to the naming differences between English and Korean.RESULTS: The English Months In Reverse Order Test took 11.00 ± 2.69 seconds with a difficulty of 2.27 ± 0.98 points, while the Korean Months In Reverse Order Test took 5.69 ± 1.35 seconds with a difficulty of 1.50 ± 0.73 points (p < .001). The Adding Serial 3s Test and Days of the Week Backward Test were evaluated for completion time, difficulty, and accuracy in 30 English and 30 Korean participants. The results of the Korean Adding Serial 3s Test were poor (time 10.50 ± 3.55 seconds; difficulty 2.97 ± 1.25 points), while The Korean Days of the Week Backward Test was fast and easily replaced Months In Reverse Order Test (time 3.46 ± 0.72 seconds; difficulty 1.5 ± 0.82 points). An attempt with Korean Months In Reverse Order Test and Days of the Week Backward Test, where participants were asked to recite all at once, yielded acceptable results (time 10.62 ± 2.04 seconds; difficulty 1.90 ± 0.99 points) compared to English Months In Reverse Order Test (p > .05). The face validity was adequate and reliability was mostly high (Cronbach alpha = 0.79).CONCLUSIONS: The results indicate that The Korean Sports Concussion Assessment Tool 6th edition was well translated and exhibited adequate face validity and reliability.