The Senate of Iran (Persian: Kakh-e Majles-e Sena, کاخ مجلس سنا) was the upper house legislative chamber in Iran from 1949 to 1979. A bicameral legislature had been established in the 1906 Persian Constitutional Revolution but the Senate was not actually formed until after the Iran Constituent Assembly, 1949, as an expression of Shah Mohammad Reza Pahlavi's desire for more political power.