Name
- Griffiths, Ralph, editor and publisher, c 1720-18031
- Gronovius, Johannes Fredericus, Botanist1
- Groummert, -, correspondent of Emmanuel Mendez da Costa, fl 17651
- Gruner, Gottlieb Sigmund, archivist, naturalist, notary and lawyer, 1717-17781
- Grynaeus, Simon, of Basel, clergyman and translator, 1725-17991
- Guettard, Jean-Étienne, naturalist and mineralogist, 1715-17861
- Gumpertz, Aaron S, physician and correspondent of Emmanuel Mendez da Costa, fl 1752-17671
- Hale, John, surgeon and correspondent of Emanuel Mendes da Costa, fl 1784-17861
- Hallifax, R-, Dr1
- Hamilton, Gilbert1
- Hampe, John Henry, MD, Physician to the Princess of Wales1
- Harris, Charles, of Add MS 285381
- Harward, John, junior, of Hayne1
- Harward, John, senior, of Hayne1
- Hasted, Edward, antiquary1
- Haviland, Thomas, Apothecary, of Bath1
- Hawes, T-1
- Hawkeens, John, Surgeon at Dorchester1
- Head, B-1
- Heinsius, G-1