James "Jim" M. Cahill is the 62nd and present mayor of New Brunswick, New Jersey, United States. He has held the office since 1991.
He is a lifelong resident of the city and a 1970 graduate of St. Peter's High School. He later attended Middlesex County College, Glassboro State College (now Rowan University), and Rutgers University.
He obtained his Juris Doctorate from Seton Hall University School of Law. Prior to his election as mayor, Cahill served as an Assistant City Attorney for ten years.