Islam in the Philippines is the second largest religion in the country, and the faith was the first-recorded monotheistic religion in the Philippines. Historically, Islam reached the Philippine archipelago in the 14th century, through contact with Muslim Malay and Arab merchants along Southeast Asian trade networks, in addition to Yemeni missionaries from the tribe of Alawi of Yemen from the Persian Gulf, southern India, and their followers from several sultanates in the wider Malay Archipelago. The first missionaries then followed in the late 14th and early 15th centuries. They facilitated the formation of sultanates and conquests in mainland Mindanao and Sulu. Those who converted to Islam came to be known as the Moros, with Muslim conquest reaching as far as Tondo that was later supplanted by Bruneian Empire vassal-state of Maynila.

Christianity is the predominant religion in the Philippines, with Roman Catholicism being its largest denomination. Sizeable minorities adhering to Islam, Dharmic religions, and indigenous Philippine folk religions are also present.