- Helmholtz, Hermann von, 1821-18941
- Herschel, John F. W. (John Frederick William), Sir, 1792-18711
- Hey, William, 1772-18441
- Hicks, John Braxton1
- Hillier, Thomas, 1831-18681
- Hilton, John, 1804-18781
- Hoffman1
- Holland, Henry, Sir, 1788-18731
- Holmes, W. Theodore1
- Holthouse, C. (Carsten), 1810-19011
- Hyrtl, Joseph, 1811-18941
- Jacobi, A. (Abraham), 1830-19191
- Jaeger1
- Jobert, Antoine Joseph, de Lamballe, 1799-18671
- Jones, Henry Bence, 1814-18731
- Juenken, Johann Christian, 1793-18751
- Kahn, Arnold (of Strasburg)1
- Kelly, Thomas, 1795-1841.1
- Koch, Robert, 1843-19101
- Kolliker, Albert, 1817-19051