Francis Steffen (November 5, 1836 - ?) was an American farmer from Hortonville, Wisconsin who spent two terms as a member of the Wisconsin State Assembly from Outagamie County, being elected first as a "Reform Democrat" and then re-elected as a Democrat.
Steffen was born in Orenhofen, Rhenish Palatinate, Prussia on November 5, 1836. He received a common school education, and became a farmer by occupation. With his family he emigrated to the United States in 1848, and settled for a while in Schuylerville, New York, before coming to Wisconsin in 1852 with his parents, who settled in Hortonville.
Steffen entered the 32nd Wisconsin Volunteer Infantry Regiment in August, 1862; was with Ulysses S Grant in the Vicksburg Campaign in 1862-63; marched with William Tecumseh Sherman on the Meridian, Mississippi campaign in 1864: took part at the Siege of Atlanta and the Battle of Jonesborough; marched with Sherman to the sea and into South and North Carolina; took part in all the engagements with the command; marched through Washington, took part in the Grand Review of the Armies in May, 1865, and in June 1865 was mustered out.