Billy
- Not to be confused with Bill.
Billy has several referrals.
- For the character from The Teal Mask DLC of Pokémon Scarlet and Violet, see Glitterati.
- For one of the members of Go-Rock Quads from Pokémon Ranger, see Go-Rock Quads.
- For Brock's younger brother, see Brock's siblings.
- For the character from Pokémon Black 2 and White 2, see Billy Jo.
- For the character of the day, see Billy (JN098).
- For the voice actors, see Billy Kametz, Billy Regan, or Billy Bob Thompson.
- For the voice actor sometimes credited as Billy Beach, see Carter Cathcart.