| Professor Margherita Guarducci FBA | Year of birth 1902 | Year of death 1999 | Year elected 1978 | Fellowship category Corresponding |
| Senatore Ignazio Guidi FBA | Year of birth 1844 | Year of death 1935 | Year elected 1917 | Fellowship category Corresponding |
| Professor Battiscombe George Gunn FBA | Year of birth 1883 | Year of death 1950 | Year elected 1943 | Fellowship category UK |
| Professor Oliver Robert Gurney FBA | Year of birth 1911 | Year of death 2001 | Year elected 1959 | Fellowship category UK |
| HM King Gustav Gustav VI Adolf Hon FBA | Year of birth 1882 | Year of death 1973 | Year elected 1953 | Fellowship category Honorary |
| Professor Hans Guterbock FBA | Year of birth 1908 | Year of death 2000 | Year elected 1976 | Fellowship category Corresponding |
| Professor Malcolm Guthrie FBA | Year of birth 1903 | Year of death 1972 | Year elected 1968 | Fellowship category UK |
| Professor William Guthrie FBA | Year of birth 1906 | Year of death 1981 | Year elected 1952 | Fellowship category UK |