The Asian Financial Crisis in 1997 and various other scandals in large companies in Indonesia led to the emergence of good corporate governance (GCG). Regulators on the capital markets understand that good corporate governance promotes transparency and improves the quality of financial reporting, including cash management, responsibly. Furthermore, high cash levels lead managers to misuse the fund for personal gain, because the assets under their supervision increase thereby. This research analyzes the effect of corporate governance, such as board size, and independence on cash holding in Indonesia. Data were obtained from 373 firms in seven industries publicly tabulated on Indonesia Stock Exchanges (IDX) from 2008-2017 and 2,742 firm-year observations. The obtained data were analyzed using Common, Fixed, and Random Effects Models. The result showed that the total number of the board of directors, is positively and significantly proportional to Board Size thereby increasing the company holds cash. Meanwhile, the other corporate governance variable, known as Board Independence, is insignificant in any three models. The result also showed positive coefficients of board size on cash holding (CASH) in companies with and without CEO duality. The result further showed that the independent board had a significant and negative impact on cash holding (CASH), which is more pronounced in companies with CEO duality and used to strengthen corporate governance. The results have specific policy implications like the importance of corporate governance, in particular the role of the Board of Directors in the effective supervision of managers and transparency of enterprises.