Jonathan P. Dolliver (February 6, 1858 - October 15, 1910) represented the state of Iowa in the United States Senator from 1900 to 1910. Dolliver was initially appointed to the Senate to fill the unfinished term of John H. Gear, who died while in office. Senator Dolliver was later elected to the Senate, where he served until his own death.
From 1889 to 1900 he served in the United States House of Representatives. He was a member of the Republican party.
The small town of Dolliver, Iowa established on a new railroad line in 1900, was named in honor of the Senator.
A biography is: Jonathan Prentiss Dolliver A Study in Political Integrity and Independence, by Thomas Richard Ross (State Historical Society of Iowa, Iowa City, Iowa 1958)