Mujahideen, or Mujahidin is the plural form of mujahid, (doers of jihad'), an Arabic term that broadly refers to people who engage in jihad (lit.?'struggle or striving [for justice, right conduct, Godly rule, etc.]'), interpreted in a jurisprudence of Islam as the fight on behalf of God, religion or the community (ummah).
The widespread use of the word in English began with reference to the guerrilla-type militant groups led by the Islamist Afghan fighters in the Soviet–Afghan War (see Afghan mujahideen). The term now extends to other jihadist groups in various countries such as Myanmar (Burma), Cyprus, and the Philippines.