| J. C. M. v. C. |
| J. D. H. („Math. Thur.“) |
| J. P. N. M. V. |
| J. U. M. |
| Jocifer, Johann |
| Juhrmann, Johann Friedrich |
| Justus, Michael |
| Jäger, Bartholome Conrad |
| Jäger, Donat Joseph |
| Jäger, Johann Andreas |
| Jäger, Johann Georg |
| Jäger, Johann Georg Joseph |
| Jägers Erben, Johann Georg Joseph |
| K., F. C. |
| Karstens, Fedder |
| Kather, Friedrich Ferdinand |
| Kemerling, Lambert |
| Kerl, Stanislaus |
| Keyser, Johann |
| Kiem, Johann Valentin |
| Kirch, Christfried |
| Kirch, Gottfried |
| Kirch, Gottlieb |
| Kirchfreund, F. |
| Kirchner, Gottlieb |
| Klug, Martin |
| Koestner, Sebastian |
| Kohlmayr, Peter Conrad |
| Krabbe, Johannes |
| Krabbe, Wilhelm |
| Kracker, Bernhard |
| Krafft, Gottlieb |
| Kreslin, Georg |
| Kretzschmar, Johann |
| Krügener, Michael |
| Krüger, Conrad |
| Köbel, Jacob |
| Köhler, Alexander Wilhelm |
| Köhler, Johann Erhard |
| Köhler, Johann Jacob |
| Kötritz, Wolff von |
| Kühn, Heinrich |
| Künnig, Gottfried |
| Kürner d. J., Johann Jacob |
| Kürner, Leopold Matthaeus |
| Laensbergh, Mathieu |
| Landolt, Joachim |
| Latomus, Bernhard |
| Lemp, Petrus |
| Leypolt, Paul |
