The chromosomes of Echinococcus multilocularis Leuckart, 1863 have been described, based on components of cells from the adult stage and the larval stage of the cestode. Chromosomal complements of 2n = 18, n = 9 were confirmed. The fundamental number of chromosomal arms were 24. Karyograms are presented, in which the 18 elements are grouped according to arm-ratios and size. An idiogram of G-bands is included.