Cao Zhenxiu

Cao Zhenxiu (Chinese: 曹贞秀; 1762–?) was a Chinese calligrapher. She was from 1782 married to the official and calligrapher Wang Qisun. She was known as the best female calligrapher in China of her time, and it was common for those ordering calligraphy from her spouse to order from her as well.