- H L Data Storage
- H. Jimenez
- H. Wilson
- Hagerty
- Hagstrom
- Hal Leonard
- HALLOLUX
- HaloCam
- HaloFox
- Hammond
- Hankie
- HanvinBA
- HanvioTC
- Harbinger
- HARD DRIVES
- Harmon
- Harmony
- Harrison
- Harry Hartmann
- Haynes
- Hcsunfly
- Headliner
- Headrush
- Headway
- Heather Brown Electronicals
- Heavyocity
- HEDD
- Heil Sound
- Hendrix Drums
- Hennessey
- Hercules
- Hercules DJ
- Heritage
- Heritage Audio
- Hetman
- HEWHITE
- HEWLETT PACKARD
- HexHider
- HGST
- HGST a Western Digital Company
- Hidersine
- HIFIMAN
- Hiipoo
- Hikvision
- Hill
- Hilo
- HINGESTIX
- HISOOS
- Hitachi
- HitnMix
- HK AUDIO
- Hodge
- Hofner
- Hohner
- Holeyboard Pedalboards
- Holton
- Honeytone
- Hornberg Research
- Hosa
- House Brand
- HP
- Hughes & Kettner
- HUJANO
- Humes & Berg
- Hyyeosd