So Yeon Ryu becomes women's golf No.1

After winning the LPGA event in Arkansas at the weekend, So Yeon Ryu has risen to No.1 in the women's golf world rankings.

So Yeon Ryu is No.1 in the women's rankings after winning the LPGA event in Arkansas. (AAP)

Two-time major champion So Yeon Ryu has a new title - No.1 in the world.

Ryu became the third player this year to rise to No.1 in the Women's World Golf Ranking and it came on the back of her victory in the Walmart NW Arkansas Championship on Sunday.

The 26-year-old from South Korea replaces Ariya Jutanugarn, who held the top ranking for two weeks.

Jutanugarn had replaced New Zealand's Lydia Ko. Australia's Minjee Lee, world No.16, is the highest ranked Australian.

Ryu won for the second time this year on the LPGA Tour, adding to her title in the first major at the ANA Inspiration when she beat Lexi Thompson in a playoff. Ryu also won the US Women's Open in 2011 for her first victory on American soil.

She is the third South Korean native to be No.1, joining Inbee Park and Jiyai Shin.