Islam in Malaysia

Islam in Malaysia is represented by the Shafi‘i school of Sunni jurisprudence. Islam was introduced to Malaysia by traders arriving from Persia, Arabia, China and the Indian subcontinent. It became firmly established in the 15th century. In the Constitution of Malaysia, Islam is granted the status of "religion of the Federation" to symbolize its importance to Malaysian society, while defining Malaysia constitutionally as a secular state. Therefore, other religions can be practiced legally, though freedom of religion is still limited in Malaysia.

Malaysia is a country whose most professed religion is Islam. As of 2020, there were approximately 20.6 million Muslim adherents, or 63.5% of the population. In 2023, a Pew Research Center report gave a higher share of 75% of Malaysia's adults self-identifying as Muslim.

Various Islamic holidays such as Eid al-Fitr, Eid al-Adha and Mawlid have been declared national holidays alongside Christmas, Chinese New Year, and Deepavali.