Other
- Aquarius (Marvel Comics), a Marvel Comics character
- Aquarius (DC Comics), a DC Comics character
- Aquarius (game), a card game published by Looney Labs
- Aquarius (sports drink), a sports drink manufactured by Coca-Cola
- Aquarius (TV series), a 1970s British arts television series
- Aquarius Casino Resort, a casino hotel in Laughlin, Nevada
- Mattel Aquarius, an early brand of home computers
- An aquarius of the Roman Empire was a hydraulic engineer in charge of an aqueduct
- Lewis H. Morgan or Aquarius (pen name, 1818–1881), 19th-century American anthropologist and social theorist
- Aquarius (opera)
- Aquarius (Chinese astronomy)
- Aquarius Mountains
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