Louis Leo Jacobs (born August 27, 1948) is an American vertebrate paleontologist who discovered Malawisaurus while on an expedition in Malawi. Much of his research concerns the interrelationships of biotic and abiotic events through time. In recent years he has focused on the middle portion of the Cretaceous and the Cenozoic, especially with respect to terrestrial ecosystems. Louis Jacobs is a vertebrate paleontologist who utilizes the fossil record to answer significant questions about Earth and life history. His fieldwork is currently focused in Angola, Antarctica, Alaska, and Mongolia.