• Acleistoceratidae Flower, 1950 † (uncertain > unassessed)
• Acrioceratidae Je. Vermeulen, 2004 †
• Actinoceratidae Saemann, 1853 †
• Adrianitidae Schindewolf, 1931 †
• Adygeyidae Doguzhaeva, 1996 † (uncertain > unassessed)
• Alloposidae A. E. Verrill, 1881
• Allotrioceratidae Flower, 1955 †
• Allumettoceratidae Flower, 1946 † accepted as Tripteroceratidae Flower, 1941 †
• Amphitretidae Hoyle, 1886
• Ancistrocheiridae Pfeffer, 1912
• Ancyloceratidae Gill, 1871 †
• Anomalosaepiidae Yancey & Garvie, 2011 †
• Apsidoceratidae Hyatt, 1884 †
• Arcestidae Mojsisovics, 1875 †
• Archiacoceratidae C. Teichert, 1939 †
• Architeuthidae Pfeffer, 1900
• Argonautidae Cantraine, 1841
• Arietitidae Hyatt, 1874 †
• Armenoceratidae Troedsson, 1926 †
• Ataxioceratidae Buckman, 1921 †
• Aturiidae Hyatt, 1894 †
• Aulacoceratidae Mojsisovics, 1882 †
• Australiteuthidae Lu, 2005
• Bactroceratidae A. H. King & D. H. Evans, 2019 †
• Baculitidae Gill, 1871 †
• Balatonitidae Spath, 1951 †
• Balkoceratidae Flower, 1964 † accepted as Plectronoceratidae Kobayashi, 1935 †
• Baltoceratidae Kobayashi, 1935 †
• Barrandeoceratidae Foeste, 1925 †
• Bassleroceratidae Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 †
• Bathmoceratidae Gill, 1871 †
• Bathothaumatidae Grimpe, 1922 accepted as Cranchiidae Prosch, 1847
• Bathypolypodidae G. C. Robson, 1929
• Bathyteuthidae Pfeffer, 1900
• Batoteuthidae R. E. Young & Roper, 1967
• Bayanoteuthidae Naef, 1922 †
• Belemnitellidae Pavlov, 1914 †
• Belemnitidae Owen, 1838 †
• Belemnopseidae Naef, 1922 †
• Belemnoseidae Wiltshire, 1869 †
• Belemnotheutidae Zittel, 1884 † (uncertain > unassessed)
• Belopteridae Fischer, 1887 †
• Belosaepiidae Dixon, 1850 †
• Belosepiellidae Naef, 1921 †
• Binneyitidae Reeside, 1927 †
• Bisonoceratidae D. H. Evans & A. H. King, 2012 †
• Boggyoceratidae Mutvei, 2017 †
• Bolitaenidae Chun, 1911 accepted as Bolitaeninae Chun, 1911
• Brachioteuthidae Pfeffer, 1908
• Brevicoceratidae Flower, 1945 †
• Buchitidae Hyatt, 1900 †
• Carbactinoceratidae Schindewolf, 1943 †
• Cenoceratidae Tintant & Kabamba, 1983 †
• Centroceratidae Hyatt, 1900 †
• Ceratitidae Mojsisovics, 1878 †
• Chihlioceratidae Grabau, 1922 †
• Chiroteuthidae Gray, 1849
• Chondroteuthidae Jeletzky, 1965 †
• Chtenopterygidae Grimpe, 1922
• Cirroctopodidae M. A. Collins & Villenueva, 2006
• Cirroteuthidae W. Keferstein, 1866
• Cladiscitidae Zittel, 1884 †
• Cleoniceratidae Whitehouse, 1926 †
• Clinoceratidae Flower, 1946 † (uncertain > unassessed)
• Clionitidae Arabu, 1932 †
• Clydonautilidae Hyatt, 1900 †
• Columbitidae Spath, 1934 †
• Coreanoceratidae Chen, 1976 †
• Cranchiidae Prosch, 1847
• Ctenopterygidae Grimpe, 1922 accepted as Chtenopterygidae Grimpe, 1922
• Cycloceratidae Foerste, 1925 †
• Cyclolobidae Schindewolf, 1931 †
• Cyclostomiceratidae Foerste, 1925 †
• Cycloteuthidae Naef, 1923
• Cylindroteuthidae Stolley, 1919 †
• Cyptendoceratidae Zhuravleva, 1994 †
• Cyrtendoceratidae Hyatt, 1900 †
• Cyrtocerinidae Flower, 1946 † (uncertain > unassessed)
• Cyrtogomphoceratidae Flower, 1940 †
• Daraelitidae Chernov, 1907 †
• Dawsonoceratidae Flower, 1946 †
• Desmoceratidae Zittel, 1895 †
• Desmoteuthidae A. E. Verrill, 1881 accepted as Cranchiidae Prosch, 1847
• Dicoelitidae Sachs & Nalnjaeva, 1967 †
• Dictyoconitidae Gustomesov, 1978 †
• Diestoceratidae Foeste, 1926 †
• Dimitobelidae Whitehouse, 1924 †
• Dinaritidae Mojsisovics, 1882 †
• Diplobelidae Naef, 1926 †
• Diplomoceratidae Spath, 1926 †
• Discoactinoceratidae Kobayashi, 1978 †
• Discoceratidae Dzik, 1984 †
• Discophyllitidae Spath, 1927 †
• Dronovitidae Shevyrev, 1990 †
• Duvaliidae Pavlov, 1914 †
• Eledonidae Rochebrune, 1884
• Ellesmeroceratidae Kobayashi, 1934 †
• Emmonsoceratidae Flower, 1958 †
• Endoceratidae Hyatt, 1884 †
• Endocycloceratidae Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 † accepted as Protocycloceratidae Kobayashi, 1935 †