Rufus Putnam Ranney (October 30, 1813 – December 6, 1891) was a Democratic politician in the U.S.
State of Ohio who helped write the second Ohio Constitution, and was a judge on the Ohio Supreme Court in 1851–1856 and 1863–1865.
Rufus Putnam Ranney was born at Blandford, Hampden County, Massachusetts.
The family moved to Portage County, Ohio in 1824.
He earned enough money chopping firewood to enter Western Reserve College then at Hudson, but not enough to complete the college course.
At age 21 or 22 he began the study of law at the office of Joshua Reed Giddings and Benjamin Wade, and was admitted to the bar in 1836.