Other forms: shahs
In Iran, an emperor or king was historically called a shah. The last shah was overthrown in 1979, during the Iranian Revolution.
Mohammad Reza Pahlavi, the last shah of Iran, is often simply referred to as "the Shah." During his rule, he gave himself the title Shahanshah, or "king of kings." Shah has a Persian root, and the history of shahs goes all the way back to the Persian Empire in the sixth century BCE. Iran's last shah was exiled to Egypt during the Iranian Revolution, and the monarchy was officially abolished.