- Gwazdauskas, Francis Charles, 1943-
- Gwee, Aik-Tweck
- Gwerder, Caroline Goodwin, 1934-
- Gwerder, Frank Joseph, 1932-
- Gwiazdowicz, Dariusz J., 1966-
- Gwiazdowski, Rodger
- Gwilliam, G. Frank 1925-2016
- Gwillim, Elizabeth, 1763-1807
- Gwinn, Abigail
- Gwinn, Kimberly D
- Gwinner, Eberhard 1938-2004
- Gwinner, Wilhelm Heinrich von, 1801-1866
- Gwo, Jin-Chywan
- Gwosdow, Andrea Rose, 1954-
- Gwynn, A. M.
- Gwynne, Darryl T
- Gwynne, John
- Gwynne-Vaughan, D. T. (David Thomas) 1871-1915
- Gwynne-Vaughan, H. C. I., Dame (Helen Charlotte Isabella), 1879-1967
- Gwyther, Janet
- Gwyther, Reginald Felix
- Gyaltshen, Yangtsho,
- Gyam, Singh
- Gyárfas Wolf, Verena Hildegard
- Gyarfas, E C Miss
- Gye, William Ewart, 1884-1952
- Gyeltshen, Choki
- Gyenge, Javier E
- Gyger, Marcel
- Gyi, Sai Wanna
- Gyldenstolpe, Count Nils
- Gyldenstolpe, Nils, 1886-1961
- Gyllenborg, Carl, greve, 1679-1746
- Gyllenborg, Gustaf Adolf
- Gyllenhaal, Charlotte
- Gyllenhaal, Lars Olof
- Gyllenhaal, Leonard, 1752-1840
- Gyllin, Roger.
- Gymnich, Johann active 1520-1544
- Gynther, Ian C
- Gynther, Ian C. (Ian Charles), 1961-
- Győrffy, István 1880-1959
- Gyosheva, Melania
- Gyselinck, Thomas
- Gyug, Les W.
- Gyulai, Gaston Gaal.
- Gyulai, István
- Gyulai, Péter, 1950-
- Gyuris, Emma
- Gyurkovics, Henrik
- Gyves, Michael T.
- Gyvken, John, active 1551-
- GZA GeoEnvironmental, Inc.