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- Giles, Alfred E. (Alfred Ellenwood), 1819-1904, author3
- Gill, Theodore, 1837-19143
- Gillette, W. R. (Walter Roberts), 1840-1908, author3
- Gilman, Chandler Robbins, 1802-18653
- Gobrecht, William H., 1828-19013
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- Good, Peter P. (Peter Peyto), 1789?-18753
- Goodno, William C. (William Colby)3
- Gorgas, Ferdinand J. S. (Ferdinand James Samuel), 1835-1914, author3
- Gouley, John W. S. (John William Severin), 1832-1920 author3
- Graham, Thomas, 1805-18693
- Gray, Asa, 1810-1888, author3
- Gregory, Samuel, 1813-18723
- Griffith, J. P. Crozer (John Price Crozer), 1856-1941 author3
- Grimes, J. Stanley (James Stanley), 1807-19033
- Guernsey, Henry N. (Henry Newell), 1817-18853
- Guernsey, R. S. (Rocellus Sheridan), 1836-1918, author3
- Hahnemann Medical College and Hospital of Philadelphia, author.3
- Ham, John R. (John Randolph), 1842-1920, author3