Aqua is the Latin word for water. In English, it may refer to:*Aqua (band), a Danish-Norwegian pop band Aqua, Chicago, an 87-story skyscraper under construction in Chicago Aqua (color), an X11 or web colour name for a shade between green and blue Aqua (satellite), a satellite part of the Earth Observing System Aqua (user interface), the primary theme of Apple Computer's Mac OS X user interface Aqua String Band, a Philadelphia String Band participating in the Philadelphia Mummer's New Year's… (More on Aqua)