Dimitri Michael Kullmann (born 1958) is a British neurologist who is a professor of neurology at the UCL Institute of Neurology, University College London (UCL), and leads the synaptopathies initiative funded by the Wellcome Trust. Kullmann is a member of the Queen Square Institute of Neurology Department of Clinical and Experimental Epilepsy and a consultant neurologist at the National Hospital for Neurology and Neurosurgery.