If by largest you mean the most followers, it's Hinduism.
d third largest religion in d world is Judaism!:) Hinduism is the third largest religion in the world, following Christianity and Islam.
The main religion distribution in Middle East is that Islam is the religion of majority there, then comes Christianity as the largest minority of Middle East and After that comes "Bahaism" as the 3rd largest religion of Middle East. http://www.datadubai.com/
mainly all over the united states and it is also the 3rd largest religion
Islam is the largest growing religion
Islam is the largest religion in Africa
Hinduism is the oldest, but it is not the smallest and is the 3rd largest, with 14% of the world population. Zoroastrianism is the smallest religion in the world, with just 0.02% of the world population.
Cthuluism is the largest religion in the world.
The largest religion in Maylaysia and Indonesia is Muslim. Maylaysia is about 60.7% Muslim and Buddhism is the next largest religion. The largest religion in Indonesia is Muslim...don't have the percentage.
The world's fifth largest religion is Sikhism.
Christianity is the largest religion in the Northern Hemisphere.
Hinduism is the third largest religion
Islam is the second largest religion: behind Christianity