William Porter

William Porter may refer to:

Law and politics

 * William Dennison Porter (1810–1883), South Carolina lieutenant governor
 * William Porter (Attorney General) (1805–1880), attorney-general of the Cape Colony
 * William Field Porter (1784–1869), New Zealand politician
 * William G. Porter, American police officer
 * William J. Porter (1914–1988), American diplomat; former ambassador to Canada and Saudi Arabia, among others
 * William Archer Porter (1825–1890), British lawyer and educationist
 * William Haldane Porter (1867–1944), British civil servant
 * William Porter (died c. 1593), member (MP) of the Parliament of England for Grantham, Bletchingley, and Helston
 * William Porter (fl. 1388), Member of Parliament (MP) for Southwark
 * William Porter (died 1436), MP for Cambridgeshire
 * William W. Porter (1856–1928), American attorney and legal author
 * William Wood Porter (1826–1907), American military officer and jurist

Medicine

 * William Townsend Porter (1862–1949), American physician, physiologist, and medical educator
 * William Henry Porter (surgeon) (1790–1861), president of the Royal College of Surgeons in Ireland

Military officers

 * William D. Porter (1808–1864), flag officer of the United States Navy
 * USS William D. Porter (DD-579), ship named after him
 * William N. Porter (died 1973) U.S. Army Major General and chief of the Army Chemical Warfare Service during World War Two.
 * William Wood Porter (1826–1907), American military officer and jurist

Music

 * William Porter (organist) (born 1946), American organist and improviser
 * Willy Porter (born 1964), American singer-songwriter

Religion

 * William Porter (archbishop) (1887–1966), English Roman Catholic archbishop in present-day Ghana
 * William Henry Porter (writer) (1817–1861), American minister and writer

Others

 * William H. Porter (1861–1926), prominent banker in New York City
 * William Porter (athlete) (1926–2000), American track and field athlete
 * William Sydney Porter (1862–1910), American writer who used the pen name O. Henry
 * William Sydney Porter Elementary School, school in Greensboro, North Carolina
 * William T. Porter (1809–1858), American writer and founder of Spirit of the Times
 * William A. Porter (1928–2015), founder of E*TRADE