Other Uses
- Aqua (Kingdom Hearts), a fictional character from Square Enix's video game franchise Kingdom Hearts
- Aqua (manga), a Japanese manga by Amano Kozue
- Aqua (user interface), the primary theme of Apple Inc.'s Mac OS X user interface
- Aqua (color), an X11 or web color name for the tone exactly halfway between green and blue
- Aqua (video game), a 2010 video game for Xbox LIVE Arcade
- Aqua (satellite), a satellite part of the Earth Observing System
- Aqua (skyscraper), an 86-story residential skyscraper in Chicago
- Aqua Multiespacio, an 22-story office skyscraper in Valencia
- Aqua America, a water utility in the eastern United States
- Aqua Restaurant, an upscale restaurant in San Francisco, California and Las Vegas, Nevada
- Project Aqua, a proposed hydroelectric scheme for Waitaki River, New Zealand
- Aqua (ingredient) also known as deionized water
- Sukhumi, the capital of Abkhazia, as a variant spelling of its Abkhaz name Akwa
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