- Gräsbeck, Gottfrid Gustaf Unoson (1927-)
- Gräsbeck, Manfred (1955-)
- Grasse, Edwin (1884-1954)
- Grassi, Ciro (1868-1952)
- Grässner, Alfred (1840-1905)
- Gratia, Louis Emile
- Grätz, Joseph (1760-1826)
- Grau, Eduardo Federico Guillermo (1919-2006)
- Graubiņš, Jēkabs (1886-1961)
- Grauer, Alexander (1952-)
- Graugaard, Lars (1957-)
- Graun, Karl Heinrich (1704-1759)
- Graves, Anita (1920-2007)
- Grāvītis, Olģerts (1926-)
- Gray, Dr Alan (1855-1935)
- Gray, Albert J. (1871-)
- Gray, Charles Edward (1882-)
- Gray, Christopher
- Gray, Francis Gillespie
- Gray, Dr George Charles (1897-)
- Gray, James (1867-)
- Gray, John
- Gray, Joseph Howard (1881-)
- Gray & Davison
- Grayson, John Harrison (1896-)
- Graziani-Walter, Carlo (1851-1927)
- Grazioli, Alessandro (1770-1834)
- Grazioli, Filippo (1774-1840)
- Grazioli, Giovanni Battista (1746-c1820)
- Greatheed, Rev. Samuel Stephenson (1813-1887)
- Greatorex, Thomas (1758-1831)
- Greatorex, Walter (1877-)
- Greaves, Leonard William (1891-)
- Greaves, Ralph Charles Johnstone (1889-1966)
- Grechaninov, Alexander Tikhonovich (Александр Тихонович) (1864-1956)
- Greef, Arthur de (1862-1940)
- Greef, Wilhelm (1809-1875)
- Green, Dr Christie (1871-1939)
- Green, Clarence
- Green, David Llewellyn (1935-)
- Green, Douglas Marshall (1926-)
- Green, Frederick
- Green, Frederick (1883-)
- Green, George
- Green, Harold
- Green, Harry J.
- Green, James
- Green, John
- Green, Dr Joseph Ernest
- Green, Reginald G.
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- Green, Russell (1908-1975)
- Green, Samuel (1730-1796)
- Green, Warren Essam (1909-)
- Green, William (1865-)
- Greene, Eric Gordon (1903-)
- Greene, Dr Maurice (1696-1755)
- Greener, Joseph H.
- Greenfield, Alfred M. (1902-1983)
- Greengrass, Burton Alexander (1886-)
- Greenhalgh, Thomas
- Greenhill, Harold Walter (1902-)
- Greenhill, John Hayton (-1938)
- Greening, Richard
- Greenish, Dr Arthur James (1860-1935)
- Greenish, Dr Frederick Robert (c1855-)
- Greenlee, Robert (1954-)
- Greenway, Kenneth James (1926-)
- Greenway, Walter George (1872-)
- Greenwood, Frank (1877-)
- Greenwood, Frank (1905-)
- Greenwood, Harry Stansfield (c1870-)
- Greenwood, James (1837-1894)
- Greenwood, John Robert (1890-)
- Greenwood, Mary (1907-)
- Greenwood, Percy (1903-)
- Greenwood, William
- Greggs, William (-1710)
- Gregoir, Édouard Georges Jacques (1822-1890)
- Gregory, Albert Arthur (1894-)
- Gregory, Alfred Edward (1862-)
- Gregory, Arthur (1890-)
- Gregory, Constance
- Gregory, Christine Hilda (c1890-)
- Gregory, George Herbert (1853-)
- Gregory, James Lively (1860-1915)
- Gregory, Jonathan
- Gregory, Peter M.
- Gregson, Edward (1945-)
- Greig, William Sydney (1910-)
- Greir, Robert Arnold (1888-)
- Greith, Carl (1828-1887)
- Grell, Dr August Éduard (1800-1886)
- Grella-Mozejko, Dr Piotr (1961-)
- Grenager, Lene (1969-)
- Grene, Richard
- Grenz, Fridel (1929-)
- Grešák, Jozef (1907-1987)
- Gresham, Herbert James Lloyd (1868-)
- Gressler, Carl
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Organist 
Organist & composer 
Composer 
Organ builder 
Other
