King Billy

King Billy may refer to:

Australia

 * Jimmy Clements (1847–1927), Wiradjuri elder, also known as "King Billy"
 * King Billy of Armidale, NSW, aka King Bobby, Aboriginal leader, grandfather of Frank Archibald, in honour of whom the Frank Archibald Memorial Lecture Series was named
 * King Billy of Bonny Doon Lorne, Bidjara elder and great-great-grandfather of Christian Thompson (artist), honoured by his 2010 work King Billy
 * King Billy Cokebottle (c. 1949–2019), white Australian comedian who wore blackface
 * Willem Baa Nip (1836–1885), also known as King Billy, William Gore or Billy Wa-wha, was a member of the Wathaurung people
 * William Lanne (c. 1835–1869), last surviving male of the Aboriginal Tasmanian Oyster Cove clan, known as King Billy

United Kingdom

 * Billy Bremner (1942–1997), Scottish footballer, often referred to as "King Billy" by supporters
 * William III of England (1650–1702), informally known in Northern Ireland and Scotland as "King Billy"

Other

 * King Billy Pine, a species of Athrotaxis
 * King Billy of Ballarat and Other Stories (1892), a series of short stories by Morley Roberts