John Azor Kellogg (March 16, 1828 – February 10, 1883) was an American lawyer, Republican politician, and Wisconsin pioneer.

Born in Bethany, Pennsylvania, Kellogg moved with his parents to Prairie du Sac, in the Wisconsin Territory, in 1840.

He was elected District Attorney for Juneau County in 1860, but resigned in April 1861 to enter service with the Union Army in the American Civil War.

[1][2] At the outbreak of the American Civil War, Kellogg helped raise a company of volunteers from Mauston and surrounding areas with Rufus Dawes.

Kellogg remained active with the Republican Party throughout his life, and, in 1878, was elected to the Wisconsin Senate, defeating Democrat M. H.

He was buried in Wausau, but later his body was re-interred in Faribault, Minnesota, where his eldest daughter, Ida, was then residing.

In 1908, the articles were collected and published by the Wisconsin Historical Commission as Capture and Escape: A Narrative of Army and Prison Life.