The implementation of Good Corporate Governance (GCG) is a crucial foundation for organizational sustainability in the globalization era. In the context of Islamic financial institutions and sharia-based companies, this governance is transformed into the Islamic Corporate Governance (Islamic CG) model, which integrates material aspects with spiritual values sourced from the Qur'an and Sunnah. This study aims to understand the concept of Islamic CG and analyze the implementation, challenges, and efforts in executing its two main principles: transparency and accountability. The method used is a descriptive qualitative analysis based on literature review. The results show that in Islamic CG, the principle of transparency is rooted in the value of ṣidq (honesty), while accountability reflects the values of mas’uliyyah (responsibility) and amanah (trustworthiness). The implementation of these two principles still faces multidimensional challenges, such as a low internal understanding of Islamic governance, the limited role of the Sharia Supervisory Board (DPS), and the absence of comprehensive standardized guidelines. Strategic efforts to overcome these issues include internalizing Islamic values within the organizational culture, strengthening the competence of human resources and the DPS, developing transparent reporting standards, and utilizing information technology. Through a solid Islamic CG model, companies are expected not only to enhance public trust but also to achieve business blessings in accordance with the objectives of Islamic law (maqāṣid al-syarī‘ah).