Objectives: This study aimed to investigate the association between age at alcohol initiation and chewing discomfort among Korean adults. Methods: Data from the Korea National Health and Nutrition Examination Survey Phase IX (2022–2023) were analyzed for 5,033 adults. Multiple logistic regression analysis was performed to examine the association between age at alcohol initiation and chewing discomfort after adjusting for confounding variables. Results: After adjustment for confounding variables, adults who initiated alcohol drinking at 12 years of age or younger showed significantly higher odds of chewing discomfort compared with non-drinkers (odds ratio=2.73). Conclusions: Systematic oral health education for elementary school students, including alcohol abstinence benefits, should be strengthened.