Liu Gongquan (simplified Chinese: 柳公权; traditional Chinese: 柳公權; pinyin: Liǔ Gōngquán; Wade–Giles: Liu Kungch'üan), courtesy name Chengxuan (誠懸) (778—865), was a Chinese calligrapher, essayist, and politician who lived during the late Tang dynasty.

The other three were Yan Zhenqing, Ouyang Xun and Zhao Mengfu.

A minister like Yan of the Tang dynasty, Liu was a native of today's Tongchuan, Shaanxi, a devout Buddhist and follower of Yan's style of writing.

Like him an expert of the regular script, Liu's works were imitated for centuries after and he is often referred in unison with his famed predecessor as "Yan-Liu".

Xuan mi ta bei (玄秘塔碑) from the Forest of Steles in Xi'an.