Flash may refer to:
- The recurring Blind-inducing ability.
- The recurring ability from Final Fantasy VI.
- The ability from Final Fantasy VII.
- The enemy ability from Crisis Core -Final Fantasy VII-.
- The status effect from Final Fantasy XI.
- The main battle theme from Final Fantasy XIII, known as "Blind By Light" in the western release.
- Jinnai's ability from Final Fantasy Dimensions.
flash is a device used in photography producing a flash of artificial light (typically 1/1000 to 1/200 of a second) at a color temperature of about 5500 K (Kelvin) to help illuminate a scene. A major purpose of a flash is to illuminate a dark scene. Other uses are capturing quickly moving objects or changing the quality of light. Flash refers either to the flash of light itself or to the electronic flash unit discharging the light.A