This study is aimed at examining the relationships among self-concept clarity, career indecision, and perceived parental overprotection in college students. Additionally, it seeks to verify the moderating effect of perceived parental overprotection on the relationship between self-concept clarity and career indecision. This study included 345 college students, between the ages of 18 and 28 who were enrolled in four-year universities across the Seoul metropolitan area, covering Seoul, Gyeonggi, and Incheon. Data were collected through an online survey, and the measures used included the Self-Concept Clarity Scale, Career Decision Scale, and the revised Korean Parental Overprotection Scale. Data analysis was performed using SPSS 27.0 and the SPSS PROCESS macro version 4.2. The key findings of the study are as follows. First, significant correlations were found among self-concept clarity, career indecision, and perceived parental overprotection. Self-concept clarity was negatively correlated with both career indecision and perceived parental overprotection, while career indecision was positively correlated with perceived parental overprotection. Second, perceived parental overprotection was found to moderate the relationship between self-concept clarity and career indecision. This study defines the close interrelationships among self-concept clarity, career indecision, and perceived parental overprotection. It provides foundational insights into the influence of perceived parental overprotection on career indecision, emphasizing how parenting styles can have long-term effects into adulthood. These findings highlight the potential for overprotective parenting to hinder the developmental tasks of adult children and offer evidence supporting the importance of promoting appropriate parenting practices in counseling and educational contexts.