Tablighi Jamaat
Pew Research Center estimates there are between 12 and 80 million adherents, spread across more than 150 countries. By some measures this made Tablighi Jamaat the largest Muslim movement in the World. The majority of the followers of the Tablighi Jamaat live in South Asia. It is estimated that nearly 50,000 members of Tablighi Jamaat are active in the United States.