No. Jehovah's Witnesses are however the fastest growing Christian denomination in America according to an ABC news report by Diane Sawyer. The fastest growing religion worldwide is Islam, not entirely because of new converts per se, but because of the population growth in the predominantly Islamic countries, where growth tends to be concentrated. This makes new children Islamic from birth. Although there has been an increase in converts in the western world and most metrics suggest it is because of the exposure the religion has seen in the media.
Next to Islam, the fastest growing religion predominantly from adult converts, is Christianity as a whole. In the west main stream Christian religions are in decline. In Africa and Asia it is growing exponentially. A concentrated effort by Christian religions, such as Jehovah's Witnesses, to publish either printed material or online websites in a vast amount of native languages is considered to be a large factor in this growth. The website of Jehovah's Witnesses, JW.org is the most translated website in the world by a large margin. (Even more languages available than Wikipedia.) This growth represents mostly adult converts to Christianity where there was no faith based belief system before.
Jehovah's Witnesses consider themselves to be Christian so the demographic includes them, but are largely disowned by the main stream Christian religions because of their rejecting the doctrines of the trinity, immortality of the soul, and hellfire.
Islam the world's fastest growing religion today and tomorrow
Wicca is the faest growing religion
The fastest growing religion in Europe is Islam but is due to births and not necessarily to conversions.
No, Buddhism is not the fastest growing religion in Europe, according to several sources.
Islam is the fastest growing religion in the Scotland.not only in the Scotland but in the world.
No, Buddhism is not the fastest growing religion in Europe, according to several sources.
The fastest growing religion in Europe is Islam but is due to births and not necessarily to conversions.
Islam is the fastest growing religion in 2010 and has been for a long time.
No.
it is not second growing but the first growing religion in world.
Islam is the fastest growing religion as statistics indicate.
Wicca is the fastest growing in terms of growth to existing size