- Gating
- Geminate
- GEN
- General American
- General British English
- Genioglossus
- Gesture
- Glide
- Gliding
- Glottal
- Glottalic airstream mechanism
- Glottalling
- Glottalisation
- Glottal reinforcement
- Glottal replacement
- Glottal stop
- Glottis
- Grammatical item
- Grassman’s Law
- Grave
- Greek letter variable
- Grid
- Grimm’s law
- Grooved fricative
- Group
- Guttural