Iran is officially Shi’a but allows other faiths to practice.

Evidence

The state is officially Shi’a, but Christians, Jews and Zoroastrians are all by the terms of the Constitution free to practise their religion in public. — Neil MacGregor, A History of the World in 100 Objects, 1258

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 1258