Oswald Hamley, character in Elizabeth Gaskell's "Wives and Daughters" Oswin Oswald, "Souffle Girl" from "Doctor Who"
"Oswald," cartoon series about an octopus, on NickJr.
Oswald Standish, Lord Chiltern, son of the Earl of Brentford in Anthony Trollope's Palliser novels
Oswald "Otto" Rocket, character from animated series RocketPower
Oswald, character from TV series "Warehouse 13" Clara Oswald, character on the BBC's Doctor Who