Identity management and integrated technologies are the basic building blocks in the field of e-Government, as they constitute secure and reliable access to online services. The implementation of integrated identity management is complex due to the involvement of multiple organizations with heterogeneous technologies, different data sources and interoperable records, sensitive user data, legal and regulatory issues, and numerous security issues. Though multiple private and governmental identity management (IDM) frameworks and technologies developed and implemented for backend organizational integration and service delivery, integrating ministries and agencies effectively and sustainably is still researchable. In this thesis, an interoperable identity management (IDM) framework is proposed by incorporating all the requirements from the administrative, technical, and security perspectives. The proposed framework can integrate the fragmented government systems between or/ and among ministries and agencies for better public service delivery in the context of electronic government. This thesis follows the design science approach. The designed framework was demonstrated and evaluated by technical experts using design science framework evaluation parameters such us completeness, usability, and interoperability.