John Bradley Winslow (October 4, 1851 – July 13, 1920) was an American jurist.
Born in Nunda, New York, he moved with his parents to Racine, Wisconsin. Winslow graduated from Racine College and received his law degree from the University of Wisconsin Law School. He was elected a Wisconsin Circuit Court judge and in 1891 was appointed to the Wisconsin Supreme Court. From 1907 until his death, Winslow served as chiej justice of the court.[1][2]