Knowledge-based industries base their business processes on intellectual capital. This study, conducted in Southeast Asian countries, examines the influence of intellectual capital on financial performance and market performance of a company in the knowledge-based industry. Intellectual capital is measured using the Modified Value Added Intellectual Coefficient (MVAIC). This study uses a oneyear time lag for MVAIC measurements and performance. The sample set consisted of 242 companies. The tests, performed using multiple regressions, analyzed MVAIC and MVAIC components consisting of Human Capital Efficiency (HCE), Structural Capital Efficiency (SCE), Relational Capital Efficiency (RCE), and Capital Employed Efficiency (CEE). The research showed that intellectual capital (MVAIC) has a positive effect on financial and market performance. The components of MVAIC have different effects; for example, HCE has a positive effect on financial and market performance. This result proves that human capital plays an important role in a company in the knowledge-based industry. SCE has no effect on financial and market performance, RCE has no effect on financial and market performance, and CEE has a positive effect on financial performance and no effect on market performance.