Saito Miuna (斎藤美海), also known as simply Miuna (みうな), is a Japanese pop singer. She was a member of the Hello! Project group Country Musume which she joined in mid-2003. She was discovered during the Morning Musume 6th Generation Auditions. Miuna was also a member of Hello! Project's futsal team, Gatas Brilhantes H.P. She was one of the first players to play with the team when it formed on September 2003. In the time with the team she was number 4. She also scored a penalty that won them a title. She left the team around July, 2005.