Formosa is a place name which comes from Portuguese and old Spanish word formosa (*from latin formosus, meaning "beautiful").

The following places bear the name:

• The geographically named island of Formosa, upon which the Taiwanese live, also sometimes called the Republic of China
  • Formosa Strait (Taiwan Strait)
• Formosan languages, the languages belonging to the Austronesian family of languages spoken by the indigenous people or aborigenes of the island of Formosa or Taiwan
• Formosa Province, Argentina
  • Formosa, Argentina, the capital of its namesake province
• Formosa, Brazil, near Brasília in Goiás State
• Formosa, Virginia, USA
• Formosa, Arkansas, USA
• Formosa, Santarém, Portugal
• Formosa, Portalegre, Portugal
• Formosa, Ontario, Canada
• The name given to Bioko island by Fernando Poo
• name given to a fort built by the Portuguese in Malacca in the 16th century.

Formosa may also refer to a fictional country located on the island of Taiwan, but whose culture was invented by George Psalmanazar as a hoax.

Formosa is also a surname found in the Maltese Islands.

See also: Formosa Magazine, Republic of Formosa, Formosa's law, Diocese of Formosa

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