Tsai Ming-Kai (蔡明介) (born April 6, 1950, Taiwan) is a Taiwanese entrepreneur, currently Chairman and CEO of MediaTek.
In 2014, according to Forbes he was ranked 20th Taiwanese by net worth ($1.80 billion). In 2014 he was 21st in the "Best-Performing CEOs in the World" ranking by Harvard Business Review.
In 2016 he received the Morris Chang Exemplary Leadership Award for pioneering the Taiwan semiconductor design industry.