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- Lawrence Wager (1904–1965), British geologist and explorer, discovered the Skaergaard intrusion
- Charles Doolittle Walcott (1850–1927), American paleontologist, discovered Burgess Shale fossils
- Roger G. Walker, (b. 1939) Canadian sedimentologist, emeritus professor
- Alfred Wegener (1880–1930), German meteorologist, continental drift pioneer
- Harold Wellman (1909–1999), New Zealand geologist of plate tectonics
- Abraham Werner (c. 1749–1817), Germany, proponent of Neptunism
- Israel Charles White (1848–1927), USA, coal geology; Permian paleontology
- Josiah Whitney (1819–1896), chief of the California Geological Survey; Mt. Whitney
- Harold Williams (born 1934), Atlantic Canada geologist
- Howel Williams (1898–1980), American (born England) volcanologist
- John Williamson (1907–1958), discovered the Williamson diamond mine, Tanzania
- J. Tuzo Wilson (1908–1993), Canadian geophysicist and plate tectonics geologist
- Newton Horace Winchell (1839–1914), USA, geology of Minnesota
- William Henry Wright (1876–1951), Canadian prospector and newspaper publisher, discovered Kirkland Lake gold district
Read more about this topic: List Of Geologists