Formosa (disambiguation)
- A Famosa
- Amanita muscaria var. formosa
- Bioko
- Bosque Formosa Esporte Clube
- Dutch Formosa
- Formosa
- Formosa (Guinea-Bissau)
- Formosa (bacterium)
- Formosa (band)
- Formosa (film)
- Formosa (horse)
- Formosa (surname)
- Formosa Cafe
- Formosa Island
- Formosa Magazine
- Formosa Peak
- Formosa Petrochemical
- Formosa Plastics Corp
- Formosa Province
- Formosa Strait
- Formosa Television
- Formosa, Argentina
- Formosa, Goiás
- Formosa, Ontario
- Formosan (disambiguation)
- Formoso (disambiguation)
- George Psalmanazar
- HD 100655
- JW Formoza
- Mount Formosa
- Nectouxia formosa
- Plettenberg Bay
- Republic of Formosa
- Ria Formosa
- Roman Catholic Diocese of Formosa, Argentina
- Roman Catholic Diocese of Formosa, Brazil
- Spanish Formosa
- Taiwan under Japanese rule