Maqu-koān (Chōng-gí: རྨ་ཆུ་རྫོང, Hàn-gí: 瑪曲縣) sī Tiong-kok Kam-siok-séng Kam-lâm Chōng-cho̍k Chū-tī-chiu ê chi̍t ê koān.