The Al-Muthanna Club (Arabic: نادي المثنى‎‎) was an influential pan-Arab fascist society established in Baghdad ca. 1935 to 1937 which remained active until May 1941, when the coup d'état of pro-Nazi Rashid Ali al-Gaylani failed. It was named after Al-Muthanna ibn Haritha, an Iraqi Muslim Arab general who led forces that helped to defeat the Persian Sassanids at the Battle of al-Qādisiyyah. Later known as the National Democratic Party, Nadi al-Muthanna was influenced by European fascism and controlled by radical Arab nationalists who, according to 2005's Memories of State, "formed the core of new radicals" for a combined Pan-Arab civilian and military coalition.