oto
- n a member of the Siouan people inhabiting the valleys of the Platte and Missouri rivers in Nebraska
- n a dialect of the Chiwere language spoken by the Oto
- A page from the diary of Anne Frank, circa 1944, showing a photo of her father, Otto Frank, who survived three years of hiding in Amsterdam and his deportation to Auschwitz .
- But who is this Ali Oto?" Squeak-In Chance.