Wash could mean:

• Wash (creek), a usually dry creek bed or gulch that temporarily fills with water after a heavy rain
• WASH, a Clear Channel Communications radio station
• Wash (distilling), the liquid produced by the fermentation step in the production of distilled beverages
• Wash (Firefly), a fictional character who originated in the science fiction television series, Firefly
• Wash (painting), a light covering of diluted paint on a painting
• Wash (Prison Break episode), 40th episode of American television series Prison Break
• The Wash, the square-mouthed estuary on the northwest margin of East Anglia
• The Wash (movie), a hip-hop styled movie,
• "Wash (song)", a Pearl Jam song