Other Uses
- A young male domestic goat
- Billycan, a cooking pot used for camping
- Billy (crater), on the moon
- Billy (dog), breed of dog
- Puffing Billy (locomotive), first commercial railway steam locomotive in the UK
- Billy (pygmy hippo), a pet of U.S. President Calvin Coolidge
- Billy Blue, a historical figure from early Sydney history
- Billy Beer, a beer brand popularized by Billy Carter
- Billy doll, a "gay doll" created in 1997
- Reverend Billy and the Church of Stop Shopping, New York City-based performance group, led by Reverend Billy
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