Raymond Delacy Adams (February 13, 1911 – October 18, 2008) [1] was an American neurologist, neuropathologist, Bullard Professor of Neuropathology at Harvard Medical School and chief of neurology at Massachusetts General Hospital.

Writing together with the founder of the neuropathology lab at the Massachusetts General Hospital Charles S. Kubik, Adams wrote clinico-pathological papers, one in 1946 describing occlusion of the basilar artery,[6] and another in 1952 comparing and contrasting the demyelinating diseases including acute and chronic multiple sclerosis.

[9] In 1959, Adams and colleagues first described central pontine myelinolysis,[10] a disease stripping the myelin insulation from axons within the brain, but distinct from multiple sclerosis.

Together with the Australian neurologist James Waldo Lance he described posthypoxic myoclonus, later called Lance-Adams syndrome.

[13] In 1964 he clinically and pathologically distinguished an atypical Parkinsonian syndrome, striato-nigral degeneration,[14] now considered an α-synucleinopathy under the umbrella term multiple system atrophy.