Billy (disambiguation)

"Billy" may refer to the following:
 * "Billy" - a mercenary in the Umbrella Biohazard Countermeasure Service.
 * "Billy" - a character in the Mainstream universe.
 * "Billy" - an actor known for playing the role of "Suit #3" in Resident Evil: Apocalypse.
 * "Billy" - an actor known for playing the role of "Security Guard" in Resident Evil: Apocalypse.
 * "Billy" - an old friend of Chris Redfield and Umbrella researcher.
 * "Billy" - a war criminal rescued from a train