William Turnbull may refer to:
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William Turnbull (bishop) (died 1454), Scottish bishop
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Bill Turnbull (1956–2022), British journalist and presenter
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William Turnbull (artist) (1922–2012), Scottish artist
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William Turnbull Jr.
William Turnbull Jr., FAIA, (April 1, 1935 – June 26, 1997) was an American Bay Area architect whose unique building designs challenged the more traditional architecture of California's West Coast. His design style is most closely associated ...
(1935–1997), American architect
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William Turnbull (New Zealand architect) (1868–1941), architect based in Wellington, New Zealand
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William Turnbull (sailor) (born 1933), Hong Kong sailor
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William Barclay Turnbull
William Barclay David Donald Turnbull (1811–63) was a Scottish antiquary, born at Edinburgh. He studied law, and was admitted as an advocate at the Scottish bar 1832, but devoted much time to the study of the antiquities and older literatur ...
(1811–1863), Scottish antiquary
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William D. Turnbull
William D. Turnbull (1922-2011) was an American paleontologist associated with the Chicago Field Museum. He published over 100 papers on mammals, continuing after his retirement as the museum's curator of mammals. He searched in Australia for evid ...
(1922–2011), American paleontologist
{{hndis, Turnbull, William