The purpose of this research is to develop a specific inventory of Islamic Managerial Leadership (ILI) for Islamic professionals in organisations. The inventory is expected to be a combination of modern dimensions of conventional managerial leadership and fundamental dimensions of Islamic leadership. The dimensions of ILI were inductively developed through comparative content analysis based on the concept of Servant Leadership (S-L) and the Islamic Leadership (I-L). The content analysis revealed 19 separate clusters in which 79 items were identified for ILI. Most of the items are self-developed, based on several widely-used managerial leadership inventory. ILI was distributed to 120 Muslim professionals with leadership roles in Malaysia. The results of the Principal Component Analysis revealed the presence of 10 clusters with eigenvalues exceeding 1, explaining 56.47% variance. The 10 clusters could validate the 19 clusters identified in the comparative content analysis based on the reason that most of the items are loaded in the 10 clusters. In addition, each dimension has good internal consistency, with a cronbach alpha coefficient between 0.612 to 0.957. As a result this paper argues that ILI could be used to measure Islamic Leadership practices of professionals based on the theoretical foundation of the inventory and the above results obtained from the empirical investigation conducted for the inventory. Future research could investigate ILI with leadership performance variables to increase the validity of the inventory