Goo or GOO may refer to:
Arts and entertainment Goo (album), by the band Sonic Youth "Goo", a song by Gen Hoshino from Baka no Uta Goo (Gumby character), a character on The Gumby Show Goo (Foster's Home for Imaginary Friends), a character on Foster's Home for Imaginary Friends Great Old One, in the work of H. P. Lovecraft Guardians of Order, a defunct Canadian producer of role-playing games Milton "Goo" Berry, a character on the television show My Brother and Me
People Goo Arlooktoo (1963–2002), Canadian politician and cabinet minister Goo Kennedy (1949–2020), American professional basketball player Ah Chew Goo (1918–2015), American basketball player and coach Goo Hara (1991–2019), South Korean singer and actress Goo Hye Sun (born 1984), South Korean actress Goo Kim Fui (1835–1908), Chinese merchant and philanthropist Maurene Goo, American author
Science and technology Goo (search engine), an Internet search engine and web portal based in Japan Gaspergou, a North American fish also known as goo fish Gastric outlet obstruction, a medical condition where the outflow of the stomach is blocked
Other uses Goo language, spoken in Ivory Coast Gone Dau language, spoken in eastern Fiji, ISO 639 language code goo Guarantee of origin (GoO), an energy certificate EU regulation
See also Gray goo, a hypothetical end-of-the-world scenario involving molecular nanotechnology Gu (disambiguation) Goo goo (disambiguation)