Gu can refer to:

• Gu (family), a prominent Chinese family during the Jin dynasty
• Gu (clan), a rare surname of the Han Chinese people
• Gu (ward), a section of a city in South Korea, larger than a dong
• Gu (name), a rare last name of the Korean people
• Gu (god), the Dahomey god of war
• Gu (food), a sports nutrition product
• Gu (name),daneil gu is a noob at dota so is nico

Gu can be: Gu was a rare family name of the Han race. ... A Chinese clan (会馆, pinyin: Huìgǔan) is a patrilineal and patrilocal group of related Chinese people with a common surname and sharing a common ancestor and, in many cases, an ancestral village (see clan). ...

• the ISO 3166-1 alpha-2 code for the island of Guam
• the ISO 639-1 code for the Gujarati language
• Gu(name),shixiong is better then daneil at dota,line tower wars,ct

GU can refer to: ISO 3166-1 alpha-2 codes are the best known part of ISO 3166-1 and subsequent use as most of the country codes for Internet domain names (see also External Links below). ... ISO 639-1 is the first part of the ISO 639 international-standard language-code family. ... Gujarati (ગુજરાતી Gujarātī; also sometimes Gujrati) is one of the 22 official language and 14 regional languages spoken in India. ...

• Georgetown University in the United States
  • The Georgetown Hoyas, their sports teams
• Griffith University in Australia