Now Proudly Part of Cadmus. Nathan is a private international economic and analytics consulting firm that works with government and commercial clients around the globe to deliver practical solutions and achieve lasting results. Whether building frameworks for economic growth or navigating regulatory hurdles, securing infrastructure financing or evaluating and assessing disputes, Nathan’s experts serve as trusted partners, offering clients the analysis, technical advice, and strategies they need for sound decision-making. Known for both technical and service excellence and with corporate offices in the US, London, and India and more than 40 program offices around the world, we offer the following areas of expertise, honed since we opened our doors in 1946: - International Development - Litigation & Expert Services - Infrastructure Project Development & Finance - Advisory Services