Augment or augmentation may refer to:

• Augment (linguistics), a syllable added to the beginning of the word in certain Indo-European languages
• Augmentation (heraldry), heraldic modifications
• Augmentation (music), the musical technique of lengthening or widening of rhythm or interval
• Augmentation (obstetrics), the process by which the first &/or second stages of an already established labour is accelerated or potentiated by deliberate and artificial means.
• Augmentation (psychiatry), the combination of two or more drugs to achieve better treatment results
• Augmentation ideal, in mathematics, an ideal in a group ring
• Synaptic augmentation, a form of short term synaptic plasticity
• Augmented reality
• Augmented cognition
• NLS (computer system), a hypertext system derived from Douglas Engelbart's oNLine System, renamed "Augment" by Tymshare
• Nanotechnological augmentations, a feature in the computer game Deus Ex and its spiritual successor Project: Snowblind (renamed to "biomods" in its sequel, Deus Ex: Invisible War)