- 东加王国 dōngjiāwángguó Kingdom of TongaThe Kingdom of Tonga, an island nation located in the southern Pacific Ocean.
- 东加群岛 dōngjiāqúndǎo Tonga ArchipelagoThe island group forming the Kingdom of Tonga, consisting of over 500 coral and volcanic islands; also known as the [[友谊群岛|友誼群島|you3 yi4 qun2 dao3]].