kˈiːθ lˈuːkəz ˌɛfˌɑːɹɹˈɛs ˈeɪt mˈɑːɹtʃ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti nˈaɪn, ɡɹˈɛnɪtʃ fˈaɪv ɑːktˈoʊbɚ nˈaɪntiːnhˈʌndɹɪd sˈɪkstiːn, sˈɔːlsbɹi plˈeɪn wʌzɐ bɹˈɪɾɪʃ sˈaɪəntɪst hˌuː kˈæɹid ˈaʊt paɪənˈɪɹɪŋ wˈɜːk ɪn nˈʊɹɹəsˌaɪəns æt tɹˈɪnᵻɾi kˈɑːlɪdʒ, kˈeɪmbɹɪdʒ.
Keith Lucas FRS (8 March 1879, Greenwich – 5 October 1916, Salisbury Plain) was a British scientist who carried out pioneering work in neuroscience at Trinity College, Cambridge.