Bandwidth has several related meanings:

• Bandwidth (computing): a rate of data transfer, or bit rate, measured in bits per second
• Bandwidth (signal processing): a measure of the width of a range of frequencies, measured in hertz
• Spectral linewidth: the width of an atomic or molecular spectral line, measured in hertz

Bandwidth can also refer to:

• Bandwidth (linear algebra), the width of the band of nonzero terms around the diagonal of a matrix
• A normative expected range of linguistic behavior in language expectancy theory
• In business jargon, the resources needed to complete a task or project
• Bandwidth (radio program): A Canadian radio program

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