Colias myrmidone, the Danube clouded yellow, is a butterfly in the family Pieridae. It is found from Western Asia, through Southern Russia, Ukraine, Romania, Hungary up to Austria and the Jura Mountains near Regensburg in Germany. The wingspan is 44–50 mm. The butterfly flies in May and again from July to August in two generations. The larvae feed on species of the flowering plant in the genus Chamaecytisus including , and .