WFadā'iyān-e Islam is a Shia fundamentalist group in Iran with a strong activist political orientation. The group was founded in 1946, and registered as a political party in 1989.
WThe Islamic Coalition Party is a conservative political party in Iran that favors economic liberalism.
WIslamic Nations Party or Party of Islamic Nations was an Islamic leftist armed group with clandestine system short-lived during 1960s. It was initially a secret society active against Pahlavi dynasty in late 1950s. It consisted of middle-class youth, mostly highschool teachers and university students.
WThe Democratic Party of Iranian Kurdistan, also known as the Kurdish Democratic Party of Iran (KDPI), is an armed leftist ethnic party of Kurds in Iran, exiled in northern Iraq. It is banned in Iran and thus not able to operate openly.
WMojahedin of the Islamic Revolution Organization was an umbrella political organization in Iran, founded in 1979 by unification of seven underground Islamist revolutionary paramilitary and civil organizations which previously fought against the Pahlavi monarchy.
WThe Organization of Iranian People's Fedai Guerrillas, simply known as Fadaiyan-e-Khalq was an underground Marxist–Leninist guerrilla organization in Iran.
WThe People's Mujahedin Organization of Iran, or the Mujahedin-e-Khalq, is an Iranian political-militant organization. It advocates overthrowing the leadership of the Islamic Republic of Iran and installing its own government. Its revolutionary interpretation of Islam contrasts with the conservative Islam of the traditional clergy as well as the populist version developed by Ayatollah Khomeini in the 1970s. It is also considered the Islamic Republic of Iran's biggest and most active political opposition group.
WOrganization of Struggle for the Emancipation of the Working Class or simply Peykar, also called the Marxist Mojahedin, was a splinter group from the People's Mujahedin of Iran (PMoI/MEK), the largest of Iran's guerrilla groups. Its members broke away from the MEK to support Marxism Leninism, rather than the Leftist Islamist modernism of the People's Mujahedin. Originating in 1972 and officially founded in 1975, by the early 1980s Peykar was no longer considered active.