Clarence Dunn Van Duzer (May 4, 1864 – September 28, 1947) an American attorney and politician who served as a United States representative from Nevada.

In 1892, He was appointed by the Governor of Nevada to the position of State Land Agent.

He served as private secretary to Senator Francis G. Newlands for five years.

Van Duzer returned to Nevada, where he worked in mining and practiced law.

[2][3] After leaving the House of Representatives, Van Duzer resumed mining.