The research aimed to determine sereh (Andropogon nardus) and dringo (Acorus calamus) leaf mash effects on the mortality of Sitophilus zeamais in storage corn seeds. The study used a Completely Randomized Block design with three replicates. The treatments consisted of 1 g sereh and dringo leaf mash, 2 g sereh and dringo leaf mash, 3 g sereh and dringo leaf mash, 4 g sereh and dringo leaf mash, 5 g sereh and dringo leaf mash, and control. The research results indicated that even at the lowest dosage (1 g sereh and dringo leaf mash), the mortality of the tested S. zeamais was quite high (22.50%).Key words : Sitophilus zeamais, sereh (Andropogon nardus), dringo (Acorus calamus)