A bun is a type of small sweet cake or bread roll.
Bun or BUN may also refer to:
Science and technology Blood urea nitrogen (BUN test), a medical test Bun (software), a JavaScript runtime Occipital bun, a bulge at the back of the skull Buttocks (slang: buns), of a human body
Places Bún, a village in Albești, Mureș, Romania Bun, Hautes-Pyrénées, a commune of France Bun Island, Qikiqtaaluk Region, Nunavut, Canada
Language Bun language, Yuat language of Papua New Guinea Bun language (Vanuatu) or Mwotlap language, an Oceanic language Sherbro language (ISO 639 code), of Sierra Leone
People Given name Bun E. Carlos (born 1951), American drummer Bun Cook (1904–1988), Canadian ice hockey player Bun B (born 1973), American rapper Bun Bun (Yasuaki Fujita), Japanese composer Bun Kenny (born 1990), Cambodian–French retired tennis player Bun Lai, Asian American chef Bun LaPrairie (1911–1986), ice hockey player Bun Rany (born 1953), wife of Cambodian Prime Minister Bun Troy (1888–1918), baseball player Chou Bun Eng (born 1956), Cambodian politician Kuoy Bun Reun (born 1967), Cambodian politician Lam Bun (1930–1967), assassinated Hong Kong radio commentator Mam Bun Neang, Cambodian politician Nhek Bun Chhay, Cambodian politician Poa Bun Sreu, Cambodian politician
Surname Alexandru cel Bun, prince of Moldavia 1400–1432
Fictional characters Bun-bun, in the Sluggy Freelance webcomic Bun (or Tuff), in the anime Kirby: Right Back At Ya! Cinnamon Bun, a character in the Adventure Time animated series
Other uses Bun (hairstyle) Bún (Vietnamese for rice vermicelli) Bun Bars, a chocolate candy bar Rabbit (Scottish dialect: bun for rabbits and squirrels)
See also BUN-to-creatinine ratio, a medical test Bunn, a surname Bunne, Dutch village