William R. King (October 3, 1864 – June 2, 1934) was an American politician and judge in the state of Oregon.

A native of Washington, he also served in Oregon's legislature and promoted the initiative and referendum legislation system.

[1][2] Ten years later in 1874 William and his parents moved to Malheur County, Oregon, where he received his basic education.

[1] King practiced law in the Eastern Oregon communities of Ontario, Vale, and Baker.

William R. King died in Washington, DC, in his hotel room on June 2, 1934.