Assalamoalaikum
Islam is not a new religion ,its started when Allah send Adam from heaven to earth.
All the prophets and messenger come in the world they preach Islam and nothing.
Islam start from Hazrat Adam and its last messenger is Mohammad Rasoolallah (sal-lallah-ho alayhiwasalam)
so in my knowledge Islam founder is Hazrat Adam.
All messenger and prophets say "There is no God but only Allah, Allah is only one Allah have no father no mother ,Allah is the only power of universe.
and this was a continues message will be forwarded by last messenger and that is Islam
The religion?
God is the founder of Islam. Refer to question below.
Christianity was founded by Hazrat Jesus Christ (May peace be upon him). Islam is founded by the last prophet of Islam Hazrat Muhammad (SAW).
None Allah (God in English) is the founder of Islam before prophet Muhammad (PBUH) and after him. Refer to related question below.
Christianity and Islam are the ONLY religions having this understanding.
Islam is an Arabic word that means submission to God and surrender to His will. Allah (God in English) is the Islam founder since start of universe creation, Refer to question below for more information.
Salafiyya: "The way of the founders", reactionary Islamic puritanism and the basis of current Islamism.Ref:Roskin, M. G., & Berry, N. O. (2010). IR: The New World of International Relations, Eighth Edition. Longman.
Allah (or God in English and same God worshiped in Christianity and Judaism); the Creator; is the founder of Islam. Refer to related question below.
Judaism and Islam are based on the same foundations and ancient texts, funny huh?
The possessive form of the plural noun founders is founders'.Example: We have a bronze plaque with our founders' names.
Islam, that means in Arabic peace and submission to the one and only one God, is the call of all God prophets (including Noah, Abraham, Moses, Jesus, and Muhammad) for people since start of mankind.So, if the question talks about Islam in this sense, then all God prophets are founders of Islam.However, as Judaism and Christianity are religions per God revelation of respectively Torah and Bible to respectively the prophets Moses and Jesus, the very name Islam is the religion per God revelation of Quran to the prophet Muhammad.So, if the question talks about Islam religion per God revelation of Quran to Prophet Muhammad, then he is the only founder of Islam religion per the holy book Quran and his teachings (sayings and practices).
Islam claims all prophets, figures and even some important kings of the old testament to be its founders, but all summed up in the rising of Muhammad so he was the founder-leader of Islam. He claims and demands Islam as the seal of other religions and the christian's faith has been corrupted and wrong as well as the hebrew's faith with the jews as worse enemies of Allah.