Gu (Chinese: 辜; pinyin: Gū; Wade–Giles: Ku¹) is a Chinese-language surname, usually spelled as "Ku" or "Koo" in Taiwan. In 2013 it was found to be the 340th most common surname, shared by 138,000 people or 0.010% of the population in China.

• Koo family of Lukang, a prominent Taiwanese-Japanese business family who founded the Koos Group known as 和信集團
  • Koo Hsien-jung
  • Jeffrey Koo Sr. (Ambassador-at-Large, Chairman of Chinatrust Bank, and "Father of Credit Cards")
  • Koo Chen-fu (Taiwanese diplomat and businessman)
  • Chester Koo
  • Koo Kwang-ming (1926–2023)
  • Leslie Koo
  • Richard Koo
• Nono Ku, Taiwanese actress and model
• Gu Hongyu (辜轰余; January 31, 1971 in Beijing) a retired male beach volleyball player from the People's Republic of China
• Koh Lay Huan (辜禮歡甲, died 1826), Chinese-born businessman who became the first Kapitan China of Penang
• Gu Jiaming (Chinese: 辜家明) a retired female badminton player from China

This page lists people with the surname Gū.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.