The purpose of this paper is to examine the most significant determinants of the intellectual capital of manufacturing firms in Indonesia. Furthermore, using a regression model, it investigates whether the models proposed can provide the same explanation in Europe as in Indonesia. Multiple regression models were used during this study. Ten variables were tested statistically, using e-views of samples of 176 manufacturing companies listed on the Indonesia Stock Exchange during this study. The results indicate that leverage, audit committee, company size, and the independent board positively influence intellectual capital disclosure. However, leverage has a negative effect on firm size. These findings comply with the pecking order and financial agency theory, which helps understand the application of various studies on value for firms in Indonesia. This research was able to explore the IC determinants of manufacturing firms. However, more detailed evaluations could be conducted.