Other
- Agate, a mineral
- A marble (toy) that is made of agate
- Aggie (software), a news aggregator
- Aggie, US name of 1950s British television sitcom The Adventures of Aggie
- Cyclone Aggie, a 1971 Australian cyclone
- Aggie Awards, the awards presented each year by Adventure Gamers to the most relevant titles in the adventure genre
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