Others
- William Russell, 1st Baron Russell of Thornhaugh (c. 1558–1613), English military commander
- Lord William Russell (1767–1840), best known as a murder victim
- William Russell (writer) (1741–1793), Scottish historical and miscellaneous writer
- William Howard Russell (1820–1907), Irish reporter considered one of the first war correspondents
- William Russell (educator) (1798–1873), American educator (born in Scotland)
- William Fletcher Russell (1890–1956), president of Teachers College, Columbia University, New York
- William W. Russell, United States Ambassador to Colombia, 1904–1905, and to Venezuela, 1905–1908
- William D. Russell (historian) (born 1938), American historian and social activist
- William Hamilton Russell (1856–1907), American architect
- William Russell (physician) (1852–1940), Scottish pathologist and physician, see Russell bodies
- Sir William Russell, 1st Baronet (died c. 1714), British baronet (see Russell baronets)
- Sir William Russell, 1st Baronet (1773–1839), British baronet (see Russell baronets)
- Sir William Oldnall Russell (1785–1833), chief justice of Bengal and legal writer
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