Harmonizers
- Alexandria Harmonizers
- Barbershop Harmony Society
- Fifth Harmony
- Four Harmonizers
- Harmonic (disambiguation)
- Harmonisation (disambiguation)
- Harmonize (musician)
- Harmonizer
- Harmonizer (Apoptygma Berzerk album)
- Harmonizer (Ty Segall album)
- Harmony (disambiguation)
- Homestead Harmonizers
- I'll Sing You a Song and Harmonize Too
- List of fandom names
- The Spiritual Harmonizers