Ku Yeon-woo (born 15 March 2003) is a South Korean tennis player.

She has a career-high singles ranking of 411 by the Women's Tennis Association (WTA), achieved on 20 March 2023, and a best WTA doubles ranking of 394, reached on 14 August 2023.

[1] Ku made her WTA Tour main-draw singles debut at the 2023 Korea Open as a qualifier, losing in the first round to Claire Liu[2]

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