Yiyuan

Yiyuan or Yi Yuan may refer to:


 * Yiyuan County in Zibo, Shandong, China
 * Hospital (Han novel) (医院; Yīyuàn), 2016 Chinese novel by Han Song
 * Garden of Pleasance (怡园; Yí Yuán) in Suzhou, Jiangsu, China
 * Arts Garden (藝園; Yì Yuán) in Sé, Macau, China
 * Yiyuan Subdistrict, Daqing, Heilongjiang, China
 * Yiyuan Subdistrict, Weihai, Shandong, China
 * Yiyuan Subdistrict, Wuhan, Hubei, China
 * Yi Yuan Mansion in Xiushui Township, Changhua County, Taiwan