Koo Hsien-jung (Chinese: 辜顯榮; pinyin: Gū Xiǎnróng; Wade–Giles: Ku1 Hsien3-jung2; Pe̍h-ōe-jī: Ko͘ Hián-êng; Romaji: Ko Ken’ei; 2 February 1866 – 9 December 1937) was a Taiwanese businessman and politician who enjoyed strong links to the colonial administration of Taiwan under Japanese rule. He founded the Koos Group of companies, the largest business group in Taiwan.