Taiwan Semiconductor Manufacturing Co. (TSMC) continues to lead the global semiconductor foundry market, holding an estimated 60% market share in 2025. The company's advanced manufacturing capabilities, particularly in chips under 5nm, are critical for powering key technology sectors such as artificial intelligence (AI), 5G, and supercomputing. This sustained dominance underscores Taiwan's central role in the global technology supply chain, supported by a highly skilled workforce and cutting-edge production facilities. The global semiconductor landscape in 2025 sees other nations vying for position. China is rapidly expanding its domestic production capacity with companies like SMIC to reduce its reliance on foreign technology. South Korea remains a powerhouse in memory chips, while the United States focuses on innovation and increasing domestic fabrication through new plant investments. Japan plays a crucial role as a supplier of essential materials and manufacturing equipment to the industry. TSMC's market leadership, however, remains a defining feature of the industry's structure.