Via other European languages, ultimately a borrowing from Malay Japan, itself a borrowing from Min Nan 日本 (Ji̍t-pún), literally “sunrise” (the same meaning of Japanese 日本 (Nip-pon)), made, like most other country names, into a feminine 4th-declension noun.
Proper noun 
Japāna f, 4th declension
- Japan (an island country in the Far East region of Asia, with Tokyo as its capital)
- Japānas karogs — the flag of Japan
- Japānas vēsture — the history of Japan
- Japāna ir unitāra konstitucionāla monarhija — Japan is a unitary constitutional monarchy