This article describes the development and psychometric evaluation of the Self-Directed Learning Inventory (SDLI) tailored to Korean college students, based on study evidences of differences in learning behavior across culture and educational level. With a sample of 605 female college students in Korea, exploratory factor analysis (EFA) results suggested a 28-item, eight-factor solution: (a) Learning Needs, (b) Utilizing Skills, (c) Enduring Challenges, (d) Self-efficacy in Learning, (e) Planning Skills, (f) Evaluating Skills, (g) Completing Tasks, and (h) Internal Attribution; confirmatory factor analysis cross-validated the EFA solutions. The SDLI demonstrated adequate internal consistency, as well as evidences that support construct validity.