Miu Arioka (有岡 みう, Arioka Miu, born August 17, 1995) is a Japanese AV actress from Tokyo who is affiliated with T-Powers. Her former stage name is Mikuru Shiiba (椎葉 みくる, Shība Mikuru). Her body measurements are 96-60-89 cm (38-24-35 in), she has I cup, her height is 1.63 m ( 5′ 5″) and her blood type is O. Her hobbies are anime, cosplay and cooking. Her special skills are badmiton and licking her own nipples.

In February 2018, she made her AV debut as an exclusive actress for OPPAI under the name Mikuru Shiiba (椎葉 みくる). At that time, her agency was ARROWS. On October 1, 2019, she announced on her official Twitter account that she would be retiring that same month. On September 4, 2020, she returned under the stage name Miu Arioka (有岡 みう) under agency T-Powers.