Yuna, 6th-century Breton saint, sister of St Gwenvael
YunaKim "QueenYuna", South Korean figure skater, 2010 Vancouver Olympics Gold Medalist. Her name is not a variation of June, but a combination of the two characters Yeon and Ah. Westerners sometimes spell it "Yu-na", but "Yun-a" would be more accurate to her Korean name. Her name is actually pronounced Yawn-ah, not Yoo-na.
Yuna, stage name of Malaysian singer, songwriter, and businesswoman Yunalis MatZara'ai
Yuna is a main character from Final Fantasy X. In this case, it is the romanization of the Japanese word yuna, the name of the sea hibiscus.
Yuna, sixth-century Breton saint who was supposedly from Wales and settled in Brittany with her brother, another saint named Gwenvael. It's probably a Breton form of Úna.
Currently popular in France and the Netherlands.