Building a conceptual model of Transformational Leadership based on spiritual Intelligence to fill the gap between authentic leadership and team performance. Statistical testing in this study uses four variables, namely: authentic leadership, Transformational Leadership based on spiritual Intelligence, Perceived Organizational Support and Teamwork performance. The conceptual model was developed and tested empirically through a survey action. 110 respondents consisting of Heads of Service, heads of Fields, Heads of Service Branches, Heads of Sections, Heads of Subdivisions for developing the performance of educational institutions in Central Java, Indonesia.This research adopts Transformational Leadership theory and spiritual intelligence theory, to mediate authentic leadership with team work performance. Furthermore, by using the Sobel test, Transformational Leadership based on spiritual Intelligence is able to become an authentic leadership mediator with team workperformance and is very relevant in becoming a key factor in increasing team work performance.Limitations ofthis study are,the first is that this study focuses on the role of the mediator and the management of organizational support for employees, without considering other variables. Thesecondlimitationhow the concept of other mediation in increasing the dependent variable is.The perspective of the relationship between Transformational Leadership based on Spiritual Intelligence, Authentic Leadershipand teamwork performance provides guidance on how public organizations such as the Education Office can form authentic leadership to encourage Transformational Leadership based on Spiritual Intelligence which will improve team performance.