Johann "John" Fellenz (June 23, 1833 – December 16, 1896) was a German American immigrant, building contractor, and Wisconsin pioneer.
He was a member of the Wisconsin State Assembly, representing the southwest side of the city of Milwaukee for five terms.
As a child, he emigrated to the United States with his parents and settled in the town of Farmington, Washington County, in the Wisconsin Territory, in 1847.
[4][5] He worked on the Notre Dame Convent, St. Joseph's Hospital, as well as several churches, schools, and a Jewish temple.
John Fellenz married Anna Katharina Ruhland, another German immigrant, at Menomonee Falls, Wisconsin, on February 6, 1855.