The election came in a meeting of the committee held at the Korea Press Center in central Seoul.
The post was vacated on July 21 when Kim Jin-sun resigned with more than a year to go before his second term expires, citing the need for the committee to have a new leadership.
PyeongChang, located about 180 kilometers east of Seoul, beat out Munich of Germany to win the right to host the Winter Olympics in 2018, South Korea's first-ever Winter Games.