J. B. Ragatz was a member of the Wisconsin State Assembly.
Ragatz was born on in the Town of Honey Creek, Sauk County, Wisconsin.[1] He later went into business in Prairie du Sac, Wisconsin.
Ragatz was elected to the Assembly in 1904. He was also a member of the village council of Prairie du Sac and of the county board of Sauk County, Wisconsin. He was a Republican.