Madeline Elizabeth Cox Arleo (born November 25, 1963) is a United States District Judge of the United States District Court for the District of New Jersey and a former United States Magistrate Judge of the same court. On June 26, 2014, President Barack Obama nominated Arleo to serve as a United States District Judge of the United States District Court for the District of New Jersey, to the seat vacated by Judge Dennis M. Cavanaugh, who retired on January 31, 2014. She received her judicial commission on November 21, 2014.