Satisfaction of student affairs professionals and attrition from the field are longstanding concerns. Ineffective supervision has been linked to lack of support and trust, supervisees not feeling valued, lack of support for professional development, lack of transparency, and poor communication. Student affairs supervisors play an important role in setting the tone and creating inclusive work spaces where individuals are valued and diversity is embraced. While multicultural competence has been examined among various groups of student affairs professionals the impact of supervisors' multicultural competence on the supervisory relationship has not been thoroughly examined within the field of student affairs. Furthermore, no psychometrically sound or conceptually based instrument exists within the field of student affairs to evaluate supervisors' multicultural supervision practices. Therefore, the authors sought to describe the development and validation efforts of the Inclusive Supervision Inventory for Student Affairs (ISISA). The use of ISISA in the student affairs field has the potential to shift the way supervisors are evaluated, focusing more attention on their ability to create inclusive and supportive environments rather than on their administrative strengths.