Onesie or onesies may mean
- Onesie (jumpsuit), adult jumpsuit for relaxing or sleeping.
- Onesies, a brand name and registered trademark for infant bodysuits
- Infant bodysuit in general
- Knucklebones, a children's game, is also called onesies
- for Onesie Wednesday, see World Autism Awareness Day
- Onesi Constituency, Namibia
- One Size Fits All (disambiguation)
- One-piece (disambiguation)
|This disambiguation page lists articles associated with the title Onesie.
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