Salt water or saltwater may refer to:

• Saline water, water containing dissolved salts
• Brine, water saturated or nearly saturated with salt
• Brackish water, water that is saltier than fresh water, but not as salty as seawater
• Seawater, water from oceans or seas
• Saline (medicine), a solution of sodium chloride in sterile water
• "Saltwater" (Chicane song), a song by Chicane
• "Saltwater" (Julian Lennon song), a song by Julian Lennon
• Saltwater, an alias of the German trance group Alphazone

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