Brands – G
- G & G Inc
- G7th
- GB Eye
- Geipel
- GelRest
- Generation Music
- Genesis Images
- GEWA Music
- GF-System
- GHS Strings
- GIA Publications
- Gibraltar
- Gift Workshop
- Gioia
- Glardon
- Glasser
- Godin
- Goetz
- Gotoh
- GPO Retro
- Granite Gig Bags
- Graph Tech
- Greetings Earthings
- Griffin Publishing
- GroovyART
- Grover
- GSJ Cases
- Guillaume
- Guitar Tech
- Guitar Workshop
- Güth
- GYC