Yua Aida (あいだゆあ, Aida Yua) is a Japanese model and adult film actress. She was born in Aichi Prefecture, Japan, on August 12, 1984.
Aida, who is one of the most favourite and active Japanese AV idol, debuted in photo layouts in 2003, and made her AV debut in the January 2004 DVD release Pichi Pichi. A co-production of the KUKI and MAX-A labels, Pichi Pichi had Aida playing the role of a student writing a final paper for school on the subject of ecstasy. This concept allowed Aida to perform with a variety of AV actors.