# Eureka

Eureka often refers to:
* Eureka (word), a famous exclamation attributed to Archimedes
* Eureka effect, the sudden, unexpected realization of the solution to a problem
Eureka or Ureka may also refer to:

## History

* Eureka Rebellion, an 1854 goldminers' rebellion in Ballarat, Victoria, Australia
** Eureka Flag, the battle flag of the Eureka Rebellion
* Tehran Conference, codenamed Eureka, an Allied meeting during World War II

## Businesses

* Eureka (company), a manufacturer of vacuum cleaners
* Eureka! Restaurant Group, California-based hamburger restaurant chain
* Eureka! Tent Company, an American company
* Kværner Eureka, a Norwegian engineering and construction services company

## Media and entertainment
### Characters

* Eureka O'Hara, an American drag queen, popularized on Rupaul's Drag Race
* Eureka (Oz), Dorothy Gale's cat in The Wizard of Oz, so named because Uncle Henry found her
* Eureka (Eureka Seven), a main character in Eureka Seven

### Film and television

* Eureka (1983 film), a British-American drama directed by Nicolas Roeg
* Eureka (2000 film), a Japanese drama directed by Shinji Aoyama
* Eureka (2020 film), an Indian Telugu-language thriller film by Karteek Anand
* Eureka (2023 film), an Argentine drama directed by Lisandro Alonso
* Eureka! (Canadian TV series), a 1980s Canadian educational series
* Eureka! (2022 TV series), a 2020s American educational series
* Eureka (British TV series), a 1980s British educational series
* Eureka (2006 TV series), an American science fiction series aired 2006–2012
** Eureka (soundtrack), a 2008 soundtrack album
* Eureka TV, a British children's science show aired 2001–2005
* Eureka Learning Channel, a defunct Singaporean educational television channel

### Music

* Eureka (The Bible album), 1988
* Eureka (Jim O'Rourke album), whose title track was featured in the 2000 film
* Eureka (Mother Mother album)
* Eureka (Rooney album), 2010
* Eureka (Leslie Clio album)
* "Eureka" (Sakanaction song), 2014 song by Sakanaction
* "Eureka" (Gen Hoshino song), 2025 song by Gen Hoshino

### Literature

* Eureka (University of Cambridge magazine), published by the Cambridge University Mathematical Society
* Eureka (Italian magazine), a monthly comic magazine published between 1967 and 1989
* Eureka (Japanese magazine) [jp], a monthly general art magazine with a focus on poetry and criticism
* Eureka: A Prose Poem, a 1848 essay by Edgar Allan Poe
* Eureka, a monthly science magazine for primary school students in Malayalam language published by Kerala Sasthra Sahithya Parishad, Kerala, India
* Eureka (journal), the original name of the Canadian mathematical problem-solving journal Crux Mathematicorum

### Other media

* Eureka (musical), a 2004 Australian musical
* Eureka! (video game), a 1984 text adventure

## Places
### Australia

* Eureka, New South Wales, a suburb in Byron Shire
* Eureka, Queensland, a locality in the Bundaberg Region
* Eureka, Victoria, a small eastern suburb of Ballarat

### Canada

* Eureka, Nova Scotia
* Eureka, Nunavut
* Eureka Pass, Axel Heiberg Island, Nunavut
* Eureka Sound, Nunavut

### Equatorial Guinea

* San Antonio de Ureca, also called Ureka, on Bioko Island and known as one of the wettest places on Earth

### New Zealand

* Eureka, New Zealand, rural settlement in the Waikato District

### United States

* Eureka, California, the largest US city named Eureka
* Eureka, Colorado
* Eureka, Marion County, Florida
* Eureka, Miami-Dade County, Florida, part of Richmond West, Florida
* Eureka, Illinois
** Eureka College
* Eureka, Lawrence County, Indiana, an unincorporated community
* Eureka, Spencer County, Indiana, an unincorporated community
* Eureka, Kansas
* Eureka, Michigan, an unincorporated community
* Eureka, Missouri
* Eureka, Perry County, Missouri
* Eureka, Montana
* Eureka, Nevada
* Eureka, North Carolina
* Eureka, Oregon, an unincorporated community and ghost town
* Eureka, Pennsylvania
* Eureka, South Carolina, an unincorporated community in Aiken County, South Carolina
* Eureka, South Dakota
* Eureka, Texas (disambiguation)
* Eureka, Utah
* Eureka (Baskerville, Virginia), a historic home near Baskerville, Mecklenburg County, Virginia
* Eureka, Washington
* Eureka, West Virginia
* Eureka, Polk County, Wisconsin, a town
* Eureka, Winnebago County, Wisconsin, an unincorporated community
* Eureka Center, Minnesota
* Eureka Center, Wisconsin
* Eureka County, Nevada
* Eureka Springs, Arkansas
* Eureka Township, Adair County, Iowa
* Eureka Township, Michigan
* Eureka Township, Dakota County, Minnesota
* Eureka Township, Valley County, Nebraska
* Eureka Valley (Inyo County), California
* Eureka Valley, San Francisco, California

## Science and technology

* Eureka (organisation), an international research and development funding and coordination network
* Eureka (OPAC), a library search engine developed by RLG
* Eureka! (museum), a museum in Halifax, West Yorkshire, United Kingdom
* The Eureka, a machine for generating Latin verses
* Eureka-147, a system for digital audio broadcast
* Eureka Streams, an open source software project
* Eureka theorem, a result of Gauss that every natural number is the sum of three triangular numbers
* 5261 Eureka, an asteroid co-orbital with Mars
* Constantan, also known as Eureka, a metal alloy
* Heureka, a science centre in Vantaa, Finland
* Eureka, the transponder component of the World War II Rebecca/Eureka transponding radar
* Eureka: The Solver, numerical solver for mathematical systems of equations, released by Borland, 1987

## Transportation

* Eureka (1900 automobile), an American automobile
* Eureka (1907 automobile), an American automobile
* Eureka (airship), a Zeppelin NT owned by Airship Ventures
* Eureka (French automobile), a French automobile
* Eureka (ferryboat), an 1890-built steam ferryboat now preserved in San Francisco
* Ameri-Cana Eureka, a Canadian ultralight aircraft

## Other uses

* Eureka Diamond, the first diamond found in South Africa
* Eureka Mountain (Colorado), a summit in the Sangre de Cristo Range
* Eureka Poker Tour, poker tour in the central and eastern Europe
* Eureka Prizes, annual Australian science prizes presented by the Australian Museum, Sydney, Australia
* Eureka Shipyard, a shipyard of the early 20th century in New York State
* Eureka Tower, a 2006 91-storey residential building in Melbourne, Australia
* Disney's Eureka! A California Parade, a former parade in Disney's California Adventure Park
* Eureka! Program, a teen girls' achievement program run by Girls, Inc.
* Asociación Atlética Eureka, known as Eureka, a former football team in Argentina
* Eureka O'Hara, American drag queen