The site is edited from Seoul for local readers and is the latest development in The Wall Street Journal's 'WSJ Everywhere' strategy.
Readers in Korea will automatically be directed to the Korean-language edition. The country site menu is located at the top-left corner of the page should a reader want to switch to a different language.
This brings the total up to 11 sites in eight languages, including German, Portuguese, Spanish, Chinese, and Japanese.
International traffic has increased from 15 per cent of WSJ.com's total traffic in 2008 to 35 per cent in 2012, while international visitors have more than doubled over the past five years.
"We live in a connected world. What happens in one relatively small market can have a massive impact around the globe," said Lex Fenwick, chief executive officer of Dow Jones & Company and publisher of The Wall Street Journal. "The goal is to take our global footprint and connectivity, and create local platforms through which readers, no matter where they're based, can link to the world. This is particularly important in high-growth markets such as Korea."