INO is a trademarked abbreviation for In-N-Out Burger.

INO, Internuclear ophthalmoplegia a neurological condition

InO is a chemical shorthand for Indium(III) oxide.

Ino is a town in Kochi Prefecture, Japan

In Greek mythology, Ino was a queen of Thebes.

173 Ino is an asteroid.

Ino Yamanaka is a character in the anime/manga series Naruto.

I-No is a character in the Guilty Gear series of video games.

INO Records, an American Christian music label