Thomas Hobbes
Pierre Gassendi
Julien de La Mettrie
Holbach
Helvetius
Pierre Cabanis
Henri de Saint-Simon
Ludwig Feuerbach
Ludwig Buechner (the model for Bazarov), Force and Matter (1855): "The Bible of the German materialists"
Karl Vogt, Physiological Epistles (1847)
Jacob Moleschott
Friedrich Engels
Eugen Duehring
Ernst Haeckel, The Riddle of the Universe (1899) and Last Words on Evolution (1905) argued for a materialist monism, yet one in which all matter had a soul: so he was a materialist panpsychist.
Lenin
Wilhelm Ostwald
Roy Wood Sellars
Otto Neurath (the positivist physicalist)
J. J. C. Smart, 1963 (physicalism)
Wilfrid Sellars
The Churchlands