Saif al-Islam el-masry (Arabic: سيف الإسلام المصري‎) is the name of a certain member of al-Qaeda. The name is probably, but not certainly, a nom de guerre; Saif al-Islam means Sword of Islam and el-Masry means the Egyptian, but either or both could be a real name. Little is publicly known about this person, but his name has come up in reports and testimony on a variety of major terrorist attacks and related paramilitary and financial activities.