PT Telekomunikasi Indonesia (Telkom) has transformed the organization from a conventional telecommunication company to a digital telecommunication In 2016. The strategy in realizing this transformation is to become a hub or enabler in a digital ecosystem and this implementation requires governance to utilize data and information in around the Telkom Group. The purpose of this study is to analyze the Maturity Level of Data Governance implementation in the transformation of digital telecommunication organization, then from the result will develop policies recommendation for the future. The study use Data Governance Maturity Model (DGMM) from Stanford University. The results show that the implementation of Data Governance in Telkom has a Maturity Level with an average value of 3.5 for Foundation-Component, 4.13 for Project-Component, or the average value is 3,815. The highest maturity level of this assestment is on formalization-component, which is about determine the Data Governance structure. The study produce 17 points of recommendations for improving Telkom Group Data Governance Maturity Level.