Amplitude is a measure of a periodic variable in classical physics.

Amplitude may also refer to:

Look up amplitude in Wiktionary, the free dictionary.

• Jacobi amplitude of Jacobi elliptic functions
• Probability amplitude, in quantum mechanics
• Scattering amplitude, in quantum mechanics
• Complex amplitude

• Amplitude Studios, a video game developer
• Amplitude (2003 video game), a 2003 music video game for the PlayStation 2
  • Amplitude (2016 video game), a 2016 reboot of the 2003 video game for the PlayStation 3 and PlayStation 4

• Amplitude (company), an American public company which provides analytics products

• Amplitude (political party), a Chilean political party
• A term in gymnastics expressing the degree of execution of a gymnastic element
• A type of throw in Greco-Roman or freestyle wrestling

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