Xu JiaQi (Simplified Chinese: 许佳琪 | Traditional Chinese: 許佳琪 | Japanese: シュー・ジィアーチー | Korean 쉬쟈치), also known as KiKi (Korean: 키키) is a Chinese idol singer under STAR48 Culture Media.
She is a graduated member of the Chinese idol group SNH48 (Team SII) and active member of its sub-unit 7SENSES.
She is a former member of the Chinese project girl group THE9 before their disbandment in 2021.