Mio
minor recurring character from Grandia 1
Mio Akiyama
major character in K,On!
Mio Amakura
character in the video game series Fatal Frame
Mio Sakamoto
major character in Strike Witches
Mio Suzuki
character in Kamen Rider Kiva also known as the Pearlshell Fangire/Queen
Mio
character in Ressha Sentai ToQger also known as ToQ 3gou
Mio
My Son, 1954 children's book by Astrid Lindgren
MiO
Kraft foods flavor product, marketed as a "liquid water enhancer"
"’O sole mio
" Neapolitan song meaning "my sunshine," "mio" being the Italian word for "my"