Billy

Billy may refer to:
 * Billy, a character from the video game series F-Zero
 * Billy, a character from the American animated series The Grim Adventures of Billy & Mandy
 * Billy, a one-shot character from the British television series Thomas & Friends
 * Billy Dilley, a character from the short-lived Disney XD series mh:terribletvshows:Billy Dilley's Super-Duper Subterranean Summer