| Ignatius Gottfried Kaim | |
| Birth Date: | 1746 |
| Nationality: | Holy Roman Empire |
| Death Date: | 1778 |
| Known For: | discovery of manganese |
Ignatius Gottfried Kaim was a chemist from the Holy Roman Empire.In his dissertation De metallis dubiis published in 1770 Kaim describes the reduction of manganese oxide with carbon and the formation of a brittle metal. This is the first description of manganese metal several years before the better known synthesis of Johan Gottlieb Gahn in 1774.