William H. Clark

William H. Clark may refer to:


 * William Harold Clark (1869–1913), Canadian politician
 * Sir William Henry Clark (1876–1952), British civil servant and diplomat
 * William Hawley Clark (1919–1997), bishop of the Episcopal Diocese of Delaware
 * W. H. Clark (brewer) (William Henry Clark), brewer in South Australia
 * William Harvey Clark, member of the 104th New York State Legislature