Formosa is a placename which comes from the Portuguese word meaning beautiful. Formosa is also a surname found in the Maltese Islands:
- The non-native name for the island of Taiwan, or for the Republic of China
- Formosa Strait (Taiwan Strait)
- 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
- The name given to Bioko island by Fernando Poo
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.
See also: Formosa Magazine, Republic of Formosa
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