Louis Ahrens FRSSAf | |
|---|---|
| Born | Louis Herman Ahrens April 24, 1918 Pietermaritzburg, Natal, South Africa |
| Died | September 5, 1990 (aged 72) Cape Town, South Africa |
| Nationality | South African |
| Education | PhD |
| Alma mater | University of Pretoria |
| Occupation | Geochemist |
| Years active | 1941–1983 |
| Spouse | Evelyn Millicent McCulloch |
| Father | F.W. Ahrens |
Louis Herman Ahrens (24 April 1918 – 5 September 1990) was a South African born geochemist, academic, and author. Best known for his work in the 1950s in establishing a method of using rubidium–strontium dating as a means of geochronology.