Our Executives

Yunsok Chang
Division President, Japan

Yunsok Chang is the division president, Japan, at Mastercard. 

As the general manager for Mastercard in Japan, he oversees the company's operations and is responsible for driving strategic partnerships, elevating Mastercard's brand presence, and championing innovation payment solutions across Japan. 

An accomplished leader with over 20 years at Mastercard, Yunsok began his journey with the company in 2003 as Country Manager for Korea. Since then, he has held a range of senior leadership roles in country, region, and global scope, spanning strategy, product management, consulting services, and cross border flows. Yunsok is a familiar and trusted leader in the Japan market, having previously served as Division President, Japan at Mastercard from September 2020 to July 2022. During this tenure, he cultivated strong relationships with local stakeholders and successfully aligned global, regional, and local teams to significantly strengthen Mastercard's presence and reputation in the Japanese market. 

Before returning to his current role in June 2025, Yunsok was executive vice president of Market Development for Asia Pacific, where he led key merchant partnerships and spearheaded initiatives with digital and omni channel global and regional players. 

Prior to joining Mastercard, Yunsok worked as an investment banker at Lehman Brothers and as a strategy management consultant with McKinsey & Company based across Seoul, Hong Kong, and London. 

A global citizen, he has lived in 10 countries across Asia Pacific, North and South America and Europe.