A tattoo flash is a design printed or drawn on paper or cardboard, and may be regarded as a species of industrial design. It is typically displayed on the walls of tattoo parlors and in binders to give walk-in customers ideas for tattoos. Most traditional tattoo flash was designed for rapid tattooing and used in "street shops".

Flash is either drawn by the individual tattooist for display and use in their own studio, or traded and sold among other tattooists. Hand-drawn, local tattoo flash has been largely replaced by professional "flash artists" who produce prints of copyrighted flash to sell at conventions or through the Internet.

There is no standard size for tattoo flash, but it is most commonly found on 11x14 inch prints in North America, and at A3 paper size in Europe. Tattoo flash may or may not come with an outline, also known as a line drawing. This outline is typically printed on a separate sheet.

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