Songyee Yoon

Songyee Yoon (; born 26 December 1975) is a venture capitalist, the founder and managing partner of Principal Venture Partners (PVP), an AI-focused investment firm established in 2024, and since 2025 a member of the board of directors of HP Inc.

She was formerly the president and chief strategy officer (CSO) of NCSoft, and also served as chief executive officer (CEO) of NCSoft West. She later became the founder and managing partner of the venture capital firm Chamaeleon. Earlier in her career, she worked at McKinsey & Company and at SK Telecom, where she became the company’s first female and youngest executive team member at the age of 29. She attended Seoul Science High School, in Seoul's Jongno District. She graduated from Korea Advanced Institute of Science and Technology (KAIST). Yoon received a doctorate in artificial intelligence (AI) from the Massachusetts Institute of Technology's (MIT) department of brain and cognitive sciences in 2000, at the age of 24, becoming the youngest Korean to earn such a degree.

Career Early in her career, Yoon worked at the global management consulting firm McKinsey & Company and at the mobile solution developer WiderThan.com. becoming the company's first female and youngest ever executive team member, at the age of 29.

Yoon transferred to NCSoft in the 2000s. In 2015, she was appointed president of NCSoft, while continuing to serve concurrently as CSO of NCSoft and CEO of NCSoft West. She has also been credited with establishing a 200-child daycare center housed in NCSoft's research and development center in Pangyo, Seongnam. Yoon was the chairperson of the NC Cultural Foundation. In 2024, she founded Principal Venture Partners (PVP), a venture fund dedicated to investing in AI-native startups.

She is a trustee of the Carnegie Endowment for International Peace, and a member of the MIT Corporation. As a member of the advisory council at Stanford University's Institute for Human-Centered Artificial Intelligence, she studies the social impacts of AI and the ethics of technology. Yoon was also an advisory board member of the Center for Asian Pacific Policy and a visiting fellow at RAND Corporation's Center to Advance Racial Equity Policy. She has been a member of the Council of Korean Americans since 2020.

Yoon has been described as a prodigy of business, In 2004, The Wall Street Journal named her one of the world's 50 most promising and influential businesswomen. She is the inspiration for the television series KAIST, in which Lee Na-young portrays an engineering prodigy. Yoon is a member of the Yun family, described by Worth magazine as "one of the most successful families in the world", which also includes her eleventh cousin Joon Yun. She is popularly known as "Genius Girl" for her young academic achievements.