Other
- "Junior", atomic bomb in the novel Escape in series Island
- "Junior", sentient gun in the comic book series Buck Godot, Zap Gun for Hire by Phil Foglio
- Junior 4, a one-bedroom apartment with a separate dining room or small bedroom or office, used in the New York City real estate market
- Junior (band)
- Junior debt, a form of corporate finance
- Atlético Junior Barranquilla, football team
- Junior hockey
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