Yui Watanabe (渡部 優衣, Watanabe Yui, born December 4, 1988) is a Japanese voice actress and singer affiliated with the talent agency Dandelion.

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Watanabe was born in Saitama, Japan. She became interested in voice acting while in high school. After graduating high school in 2007, she attended Nihon Kogakuin College and majored in art planning.