Polydesmus complanatus is species of millipede in the family Polydesmidae. The species can be found in most of Europe except for countries west of Germany.

There are currently 11 subspecies:

• Polydesmus complanatus calaber Strasser, 1969
• Polydesmus complanatus complanatus (Linnaeus, 1761)
• Polydesmus complanatus constrictus Latzel, 1884
• Polydesmus complanatus costrictus Latzel, 1884
• Polydesmus complanatus illyricus Verhoeff, 1898
• Polydesmus complanatus intermedius (Attems)
• Polydesmus complanatus montanus Daday, 1889
• Polydesmus complanatus salicis Verhoeff
• Polydesmus complanatus savonensis Verhoeff, 1907
• Polydesmus complanatus szinnensis (Attems)

The subspecies Polydesmus complanatus angustus is now accepted as Polydesmus angustus, Polydesmus complanatus elevatus is now a synonym of Polydesmus angustus.

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