Sample containing 234 unrelated males and 197 unrelated females from Czech Republic was genotyped using an X-STR decaplex system in the following loci: DXS6789, DXS6809, DXS7132, DXS7133, DXS7423, DXS8378, DXS9898, DXS9902, GATA172D05, and GATA31E08. The linkage disequilibrium was observed between DXS6789 and DXS6809. The combined power of discrimination was 0.9999999998 (females) and 0.999998 (males). The mean exclusion chance was 0.999995 (trios) and 0.9998 (duos). This work presents the first population data for X-STR decaplex in Central Europe.