Prosthesis may mean the following:

• Prosthesis, an artificial replacement of a missing part of the body.
• FX prosthesis, a prosthetic intended to radicaly alter appearance or provide special effects in film, television and stage.
• Prosthesis (linguistics), an addition of a phoneme at the beginning of a word, for easier pronunciation.
• Prosthetic group (chemistry), a nonprotein component of a conjugated protein.

See also

• Orthotics devices which support or correct the function of a limb or the torso.