Kinmen ( ; POJ: Kim-mn̂g; also romanized Quemoy from Southern Min (in early Spanish romanization); literally "Golden Door" or "Golden Gate"), located at , is a small archipelago of several islands administered by the Republic of China (ROC) government: Greater Quemoy (大金門), Lesser Quemoy (小金門), and some islets. Administratively, it is Kinmen County of Fujian (Fuchien) Province, Republic of China. The county is claimed as part of Fujian's Quanzhou Prefecture by the People's Republic of China. Some islands of other counties, such as Wuciou, were transferred to the jurisdiction of Kinmen County by the ROC government following its retreat to Taiwan. Matsu is the other set of islands on the Fujian coast controlled by the ROC.

Many of the inhabitants speak the Southern Min language (Min Nan). Due to their previous political isolation, most residents will say they speak "Kinmenese", as opposed to "Taiwanese" as it is commonly called in Taiwan, though the differences are arbitrary and the two dialects are mutually intelligible. Quemoy is geographically very near Xiamen (also known as Amoy).