William, Will, Bill, or Billy Montgomery may refer to:
Law and politics U.S. William Montgomery (Pennsylvania soldier) (1736–1816), U.S. congressman and judge William Montgomery (North Carolina politician) (1789–1844), U.S. congressman and physician William J. Montgomery (1851–1913), South Carolina senator and representative, mayor and lawyer William Montgomery (Pennsylvania politician, born 1818) (1818–1870), U.S. congressman from Pennsylvania William Watts Montgomery (1827–1897), American jurist in Georgia Billy Montgomery (1937–2025), American educator and politician Bill Montgomery (activist) (1940–2020), co-founder of Turning Point USA William Dale Montgomery (born 1945), American diplomat Bill Montgomery (Arizona attorney) (born 1967), American lawyer and jurist in Arizona
Elsewhere Sir William Montgomery, 1st Baronet (1717–1788), Scottish-born politician in Ireland William Montgomery (New Zealand politician) (1821–1914), New Zealand MP, minister of education William Montgomery Jr. (1866–1958), New Zealand MP
Sports American football Bill Montgomery (halfback) (1923–2003), American football player Bill Montgomery (quarterback) (born 1949), American football player Will Montgomery (born 1983), American football center Other sports Bill Montgomery (cricketer) (1878–1952), English cricketer Bill Montgomery (footballer, born 1885) (1885–1953), Scottish footballer Bill Montgomery (Australian footballer) (1915–1988), Australian rules footballer Will Montgomery (rugby union) (born 2000), English rugby union player
Others William Fetherstone Montgomery (1797–1859), Irish obstetrician William Reading Montgomery (1801–1871), Union Army general in American Civil War William Bell Montgomery (1829–1904), American farmer, businessman, and editor William Allen Montgomery (1829–1905), American lawyer, planter and Baptist minister William Montgomery (cryptographer) (fl. 1918), British cryptographer in World War I William Thornton Montgomery (1843– 1909), American freedman, businessman, farmer, and community leader
See also William Montgomerie (1797–1856), Scottish military doctor with the East India Company Billie Montgomery, lawn bowler from Northern Ireland