- Gaffi, Tommaso Bernardo
- Galuppi, Baldassare
- Galván, Ventura
- García-Arcéluz, Félix
- García, Manuel
- Gardiner, Henry Balfour
- Gardner, John Linton
- Gasparini, Francesco
- Gastaldon, Stanislao
- Gaul, Alfred Robert
- Gaztambide, Joaquín
- Georges, Alexandre
- Gerber, Steven R.
- German, Edward
- German, Folksongs
- Gibbs, Cecil Armstrong
- Gilberté, Hallett
- Giménez, Gerónimo
- Giordani, Tommaso
- Giordano, Umberto
- Giró, Manuel
- Giuliani, Mauro
- Glanville-Hicks, Peggy
- Glinka, Mikhail
- Gluck, Christoph Willibald
- Godard, Benjamin
- Goetz, Hermann
- Goldbeck, Robert
- Goltermann, Georg
- Gomes, Antônio Carlos
- Gomis, José Melchor
- Goodhart, Al
- Gounod, Charles
- Graben-Hoffmann, Gustav
- Graener, Paul
- Grainger, Percy
- Grajal, Manuel
- Granados, Enrique
- Greene, Maurice
- Gretchaninov, Aleksandr
- Grétry, André
- Grieg, Edvard
- Griffes, Charles
- Gritzner, Rudolf
- Grovlez, Gabriel
- Gruber, Franz Xaver
- Grünfeld, Alfred
- Guastavino, Carlos
- Guerrero, Francisco
- Guerrero, Jacinto
- Guion, David W.
- Gurney, Ivor
- Gyrowetz, Adalbert
