William James Blacker was an Australian politician who represented the South Australian House of Assembly multi-member seats of Noarlunga from 1892 to 1902 and Alexandra from 1902 to 1913, representing the Liberal and Democratic Union from 1906 to 1910 and the Liberal Union from 1910 to 1913. He was colloquially known as "Old Bill Blacker".
- Occupation
- politician, farmer, auctioneer, court clerk
- Position held
- Member of the South Australian House of Assembly, Member of the South Australian House of Assembly
- Citizenship
- Australia, United Kingdom of Great Britain and Ireland
- Born
- May 30, 1843
