[Objectives]  To explore the value of morphometrics in the classification of the Formicidae and relationships among species in the genus Pachycondyla in particular. [Methods]  A morphometric study of 9 individuals from 13 species of the genus Pachycondyla was conducted. Variation in total length (TL), head length (HL), head width (HW), scape length (SL), pronotal width (PW), cephalic index (CI), and scape index (SI) was analyzed using principal component and cluster analysis. [Results]  The highest of the three principal components were head length, head width, cephalic index, and scape index, and differences among species were conspicuous. Cluster analysis showed that 13 species clustered into four clades; the first including 4 species [P. brevidorsa (Xu), P. melanari (Emery), P. rufipes (Jerdon) and P. leeuwenhoeki (Forel)], with highest similarity to the second clade, which was comprised of 3 species (P. lobocarena Xu, P. zhengi Xu and P. astuta Smith), followed by the third clade, with lower similarity, containing 4 species [P. pilosior (Wheeler), P. annamita (Andrè), P. sauteri (Forel), P. javana (Mayr)]. The fourth clade, comprised of P. chinensis (Emery) and P. luteipes (Mayr), had the least similarity to the others. P. chinensis (Emery) and P. luteipes (Mayr) were the most closely related species, clustering together in a single clade. P. zhengi Xu and P. astuta Smith, P. sauteri (Forel) and P. javana (Mayr) were also quite closely related. [Conclution]  Morphometrics is both relatively easy to apply, and a reliable method, for classifying the Formicidae.