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