Pan-Iranist Party

The Pan-Iranist Party (Persian: حزب پان‌ایرانیست, romanized: Ḥezb-e Pān-Irānist) is an opposition party in Iran advocating for pan-Iranism. The party is not registered and is technically banned, yet continues to operate inside Iran.

During the Pahlavi dynasty, the party was represented in the Parliament and considered a semi-opposition, allowed to operate until officially denouncing Iran's assent to Bahraini independence in 1971. It is an occasional supporter of the National Front, a major nationalist party, and was itself nationalist with respect to its ideology. The Pan-Iranist Party was an anti-communist organization, and regularly battled supporters of the Tudeh Party of Iran in the streets of Tehran. In the context of the 1940s, it is described as a "secular ultranationalist party", whereas in that of the mid-1960s, it is described as a "secular nationalist" party. Nowadays, the party is defined by opposition to the pan-Islamism of the post-1979 Iranian government, as well as opposition to Islam's influence on Iranian culture. Unlike pan-Arabist and pan-Turkist parties in the region, the Pan-Iranist Party currently does not advocate the return of Iran's former lands through irredentist and revanchist plans, advocating instead for the cultural integration of citizens with a shared Iranian cultural heritage.

The Pan-Iranist Party was supportive of the Iranian Green Movement in 2009, and was cited by some as an influence on Iranian Principlist positions amidst growing Iran–Saudi tensions.