- Gabard, Nadine
- Gabrieli, Andrea
- Gabrieli, Giovanni
- Gagnon, Alain
- Gagnon, Olivier
- Gagnon, Suzie
- Gagnon, Vincent-Olivier
- Gandini, Gerardo
- Garant, Serge
- García Islas, Cristina
- Garrido, Tomas
- Gatinet, Brice
- Gauthier, Alain Éric
- Gauthier, Mario
- Gauthier, Philippe-Aubert
- Gauthier, Thierry
- Gehlhaar, Rolf
- Gellman, Steven
- Gentilucci, Armando
- Gerhard, Roberto
- Gervais, Aaron
- Gervais, Raymond
- Ghent, Emmanuel
- Giazotto, Remo
- Gibson, Richard
- Giguère, Patrick
- Gilbert, Nicolas
- Ginastera, Alberto
- Gingras, Guy
- Girard-Charest, Émilie
- Gironnay, Kevin
- Girouard, Olivier
- Giroudon, James
- Glaser, Joseph
- Glass, Philip
- Glière, Reinhold
- Glinka, Mikhail Ivanovich
- Globokar, Vinko
- Gluck, Christophe Willibald
- Gobeil, Gilles
- Godbout, Gabrielle
- Goddard, Christopher
- Godin, Scott Edward
- Goeyvaerts, Karel
- Goldstein, Malcolm
- Goleminov, Michail
- Golijov, Osvaldo
- Golub, Thom
- Gonneville, Michel
- Good, Scott
- Gordon, Michael Zev
- Gosfield, Annie
- Gougeon, Denis
- Gouin, Jacques
- Goulet, Jonathan
- Goulet, Maxime
- Gourd, Simon-Pierre
- Grahl, Trevor
- Granados, Enrique
- Granger, Yves
- Grant, Alicia
- Grau, Alberto
- Grégoire, Richard
- Grelié, Sophie
- Grella-Możejko, Piotr
- Grenier, Silvy
- Griffin, Sean
- Grimmel, Werner
- Grisey, Gérard
- Griswold, Erik
- Gruber, HK
- Grundstrom, Brian Wilbur
- Gubaidulina, Sofia
- Gubler, Rico
- Guerrero Marín, Francisco
- Guézec, Jean-Pierre
- Guignard, Stéphane
- Guillou, Jean
- Guilmant, Alexandre
