Raster may refer to:
Raster graphics, graphical techniques using arrays of pixel values
Raster scan, the pattern of image readout, transmission, storage, and reconstruction in television and computer images
Rasterisation, or rasterization, conversion of a vector image to a raster image
Raster image processor, or RIP, a component of a printing system that performs rasterisation
Raster to vector, an image conversion process
Raster bar, an effect used in computer demos
Raster-Noton, a record label
Rastrum, a device used in medieval music manuscripts to draw staff lines
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