The fall armyworm, Spodoptera frugiperda, is a serious pest in large numbers on more than 350 plant species in the world. We have determined a 15,388 bp mitogenome of S. frugiperda which includes 13 protein-coding genes, two ribosomal RNA genes, and 22 transfer RNAs. The base composition was AT-biased (81.3\%). Phylogenetic trees present that Korean S. frugiperda placed in basal position of S. frugiperda clade. S. frugiperda mitochondrial genome can be used for understanding recent active migration of S. frugiperda.