The dual foci for this collection of the author’s most important writings are Swaminarayan Hinduism and South Asian immigrants in the United States. Both are topics of wide and growing interest in India and in many countries where South Indians have settled. Swaminarayan Hinduism’s growth in the past few decades in India and among Indians abroad has been remarkable: one subsect now has 8100 centers around the world where weekly meetings are held. The second focus is on the religions of South Asian immigrants: Hindus, Muslims, Jains, Sikhs and Christians. The first section is introductory and sets the stage through an analysis of the transmission of religious traditions. The second section moves from the development of Swaminarayan Hinduism and its leadership in India to its development in the United States as exemplified in Chicago. The third section analyzes the impact South Asian religions are having in the United States, and the effects that migration and modernization are having on the religions of the immigrants.