On a blustery, cloudy Saturday at Pine Beach Golf Links on the Korean peninsula, Kim finished with a three-round total of 19-under 197, after shooting a three-under 69 which included a bogey on the 18th.
Yealimi Noh (67) of the United States and Japan's Nasa Hataoka (69) are tied for second.
American Brooke Matthews, who had trailed Kim by a stroke after the second round, triple-bogeyed the par-3 15th and fell six strokes behind Kim and tied for fourth place after a 74.
Defending champion Hannah Green shot 68 and was at 11-under, eight strokes behind Kim and tied for 10th with fellow Australian Minjee Lee, who shot 71.
Steph Kyriacou (70) sits at nine under, Robyn Choi (71) eight under, Cassie Porter (69) seven under, Karis Davidson (73) one under, Gabriela Ruffels (71) even the card and Grace Kim (76) two over to round out the Aussie contingent.
This is the first of consecutive LPGA tournaments in South Korea, with the International Crown team event scheduled for next week.
After the International Crown, two more LPGA events are scheduled on the five-event Asian swing — at Kuala Lumpur, Malaysia and in Japan.
With AAP.
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