William Cleland may refer to:
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William Cleland (poet) (c. 1661–1689), Scottish poet and soldier
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William Cleland (surgeon) (1912–2005), Australian-born British cardiothoracic surgeon
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W. Wallace Cleland (1930–2013), American professor of biochemistry
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W. L. Cleland (William Lennox Cleland, 1847–1918), medical doctor in South Australia
{{hndis, Cleland, William