Algae could refer to:
- Algae, a plant.
- Bestrum algae, a species of algae.
- "Glower" algae, a species of algae.
- Algae-bread, a food.
- Algae cylinder, an air filter used aboard starships.
- Algae sugar, an extract from algae.
- Algae Sward, a sea on Dac.
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