Xinyi is an atonal pinyin romanization of various Mandarin Chinese words. It may refer to:
Clothing
Xinyi (clothing) (), a form of undershirt worn during the Han era
Mainland China
Xinyi, Jiangsu (), a county-level city in Xuzhou, Jiangsu
Xinyi railway station () Xinyi, Guangdong (), a county-level city in Maoming, Guangdong Xinyi Subdistrict, Harbin (), subdivision of Daowai District, Harbin, Heilongjiang Xinyi Subdistrict, Hegang (), subdivision of Dongshan District, Hegang, Heilongjiang Xinyi Subdistrict, Xiaoyi (), subdivision of Xiaoyi, Shanxi Xinyi, Shandong (), town in and subdivision of Yanzhou District, Jining, Shandong Xinyi, Lishi District (), town in and subdivision of Lishi District, Lüliang, Shanxi
Taiwan
Xinyi, Nantou (), township of Nantou County
Xinyi Anhe metro station (), Da'an District, Taipei
Xinyi District, Taipei () Xinyi District, Keelung () Xinyi Expressway (), Wenshan-Xinyi, Taipei Xinyi line (), a metro branch line of Tamsui–Xinyi line