Han Seong-sook (; born 20 June 1967) is a South Korean business executive and former journalist. She served as chief executive officer (CEO) of Naver Corporation from 2017 to 2021. 
Early life and education.
Han Seong-sook was born on 20 June 1967 in the Gyeonggi Province. She received a Bachelor's degree in English Literature from Sookmyung Women's University in 1989. 
Career.
Early career.
In 1989, Han began working as a reporter at Mincom and later at PC Line. In 1995, she led public relations for Nanum Technology.
Naver.
In 1997, Han joined Empas, one of South Korea's most popular web search engines in the early 2000s, as a founding member and led its search business. After Empas was sold in 2007 to SK Communications, Han began to serve in executive roles at Naver under the original incarnation of NHN Corporation.
In 2017, Han, a Vice President at the time, became CEO of Naver Corporation after Kim Sang-hun stepped down from the role. As the company's first female CEO, Han lead the development of Naver Pay and V Live and Naver's acquisition of Wattpad.
In 2021, Han stepped down from CEO after a Naver employee committed suicide, citing workplace bullying as the motive, and was replaced by Choi Soo-yeon. Han later began to lead Naver's expansion in Europe.
Recognition.
From 2017 to 2021, "Fortune" included Han on its "Most Powerful Women International" list. In 2018, Han was listed on "Forbes"' "The Emergent 25 Asia's Latest Star Businesswomen" list.