Nicholas J. Rine is a clinical professor emeritus of law at the University of Michigan. He has extensive experience as a trial lawyer in private practice and tried cases in a wide variety of state and federal courts and agencies in the 1970s and 1980s.

During that period, Rine also held several offices, including president, in the Michigan Trial Lawyers Association.

He joined the Michigan Law clinical faculty in 1989, and has taught in the Civil-Criminal Litigation Clinic, the Child Advocacy Law Clinic, the Urban Communities Clinic, the Asylum Clinic, the Women and the Law Clinic, and the Pediatric Advocacy Clinic. He also has taught ethics and negotiation courses. Since 2004, he taught a yearly course on Law and Development that connects to students' volunteer work in internships in developing nations.

Rine was active in the U-M Center for Southeast Asian Studies, and he directed Michigan Law's Program for Cambodian Law and Development, which, among other things, arranges internships for students in Cambodia. Since the mid-1990s, he has spent periods of time in Cambodia every year, working for a variety of human rights organizations and teaching at the Royal University of Law and Economics in Phnom Penh. While there on a Fulbright grant in 2000, he published a textbook on legal ethics in English and Khmer. He frequently teaches in training programs for legal services programs in Cambodia and in the United States. He serves on the board of directors of Legal Aid of Cambodia and on the U-M President's Advisory Committee on Labor Standards and Human Rights.