T seng Fan-cheng, widely known as F.C. Tseng, is a Taiwanese semiconductor industry veteran who was a key executive in the rise of Taiwan Semiconductor Manufacturing Company (TSMC), the world's largest and most important contract chip manufacturer. An engineer with a PhD, he was a crucial member of the founding team and a longtime lieutenant to the company's legendary founder, Morris Chang.

Tseng served in numerous senior leadership roles at TSMC, including as president and vice chairman, during the company's formative years and its ascent to global dominance. He was instrumental in shaping the company's operational excellence and its customer-focused culture, which have been hallmarks of its success. His decades of leadership helped to build the foundational company of the modern global electronics industry. His wealth is derived from his long and successful career and the substantial stock holdings he accumulated in the company he helped build.