This study was conducted to develop a mentoring competencies framework for Filipino library and information science (LIS) school administrators. Using a qualitative research design, it adopted multiple case study as its research methodology. Sanghiâ€™s (2007) competency pyramid and Yinâ€™s (2007) multi-case study model served as bases for the studyâ€™s conceptual framework and research paradigm. Research and interview questions were validated through a panel of expert reviewers employing a validation rubric. Participant interviews were transcribed and validated through member checking. Collected data from five Filipino LIS school administrators in Januaryâ€“ July 2017 were analyzed and coded using a modified version of Creswellâ€™s (2013) template for coding a case study using the multiple case approach. The findings of this study revealed that (a) preparing future educational administrators as mentors through the study of mentoring literature and mentoring competencies development is important; (b) a mentoring competencies framework for Filipino LIS school administrators that will guide its research and practice is very helpful; (c) mentoring and mentoring competencies awareness for educational administration students, practitioners, and school administrators in different fields must be promoted; (d) other important factors in developing a mentoring competencies framework must be considered; and (e) mentoring competencies development for Filipino LIS school administrators must be formally established and supported. Recommendations are also offered for policymakers and for future research in this area.