Bandwidth has several related meanings:
- Bandwidth (signal processing) or analog bandwidth, frequency bandwidth or radio bandwidth, a measure of the width of a range of frequencies, measured in hertz
- Bandwidth (computing), the rate of data transfer, bit rate or throughput, measured in bits per second (bit/s)
- Spectral linewidth, the width of an atomic or molecular spectral line, measured in hertz
Bandwidth may also refer to: