Polyplacophora Blainvillle, 1816
Abyssochitonidae
Acanthochitonidae Pilsbry, 1893
Acutichitonidae Hoare et al., 1983
Allochiton Fucini, 1912
Aulochiton
Austrochiton Bergenhayn, 1945
Beloplaxus Oehlert, 1881
Chitonidae Rafinesque, 1815
Choriplacidae Ashby, 1928
Colapterochiton Hoare & Mapes, 1985
Crenatolorica Laghi, 1981
Cryptoplacidae H. Adams & A. Adams, 1958
Cymatochiton Dall, 1882
Elachychiton Hoare & Mapes, 1985
Eulachychiton
Euleptochiton Hoare & Mapes, 1985
Ferreiraellidae
Glaphurochiton Raymond, 1910
Glyptochiton Koninck, 1883
Gryphochitonidae
Hanleyidae Bergenhayn, 1955
Heterochiton Fucini, 1912
Homeochiton
Ischnochitonidae Dall, 1889
Kindbladochiton van Belle, 1975
Laculina
Lavenachiton
Lepidopleuridae Pilsbry, 1892
Leptochitonidae Dall, 1889
Llandeilochiton Bergenhayn, 1956
Loboarochiton
Mesochiton Van Belle, 1975
Mopaliidae Dall, 1889
Ochmazochitonidae
Permochiton Iredale & Hull, 1926
Proleptochiton Sirenko & Starobogatov, 1977
Protalochiton Rochebrune, 1883
Pseudoischnochiton Ashby, 1930
Pterygochiton Rochebrune, 1883
Pyknochiton Hoare, 2000
Schizochitonidae Dall, 1889
Trachypleura Jaekel, 1900
Xylochitonidae
