Yuanyang may refer to:

• Mandarin duck, also known as yuanyang (鸳鸯)
• Yuenyeung (鸳鸯), a popular beverage in Hong Kong, named after the mandarin duck
• Yuanyang County, Henan (原阳县), of Xinxiang Prefecture, Henan
• Yuanyang County, Yunnan (元阳县), of Honghe Prefecture, Yunnan, well known for its spectacular rice-paddy terracing
• Yuanyang (character), in the Chinese novel Dream of the Red Chamber

• Aukštakalnis
• Aukštoji Freda Manor
• Aukštoji Gervė
• Aukštupėnai mound
• Aula365
• Aula Baratto
• Au Lac
• Aulacaspis
• Aulacaspis yasumatsui
• Aulacephalodon bainii
• Aulacese
• Aulacocalyx
• Aulacodes acroperalis
• Aulacodes adiantealis
• Aulacodes adjutrealis
• Aulacodes aechmialis
• Aulacodes aeschmialis
• Aulacodes argenteopicta
• Aulacodes argentimaculalis
• Aulacodes aurantipennis
• Aulacodes bipunctalis
• Aulacodes briocusalis
• Aulacodes brunnealis
• Aulacodes caepiosalis
• Aulacodes cervinalis