Yuu Wakui (和久井 優, Wakui Yū, January 24, 1995) is a Japanese voice actress and actress from Tochigi Prefecture. She is 166 cm tall. She is affiliated with mitt management.

She made her debut as a voice actress in the role of Sumire Hikami in the TV anime Aikatsu! She announced on September 18, 2018 that she had joined Sunaoka office (affiliated with Himawari Theater Group). She left Sunaoka Office in October 31, 2022 and became freelance after she joined mitt management in January 12, 2023.