腹足綱的譜系學分類
本頁面旨在呈現腹足綱的系统发生学分類的一個可能性。利用樹狀結構，本頁面詳列出腹足綱之下各個物種的關係。頁面盡可能採納最新的分析證據，並把證據詳列於本文底部。不過，科學界對於部分分類的意見未必一致。
腹足纲是软体动物门中重要的组成部分，是软体动物门中最大的纲，约60,000到80,000生存种。包括约409个现生的科，另外还有约202个化石科。
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過去腹足类曾分为三个亚纲，分別如下：
前鳃亚纲後來證實是一個並系群，所以從1997年開始取消了這個分類，提升成為 真腹足亚纲（）；旗下的中腹足目與新腹足目合併成為新进腹足类（）。
In one of the largest recent changes (affecting the most species of gastropods), Klussmann-Kolb "et al." (2008) showed that the traditional classification of the Euthyneura needed to be reconsidered. The change was subsequently made by Jörger "et al." (2010), who redefined the major groups within the Heterobranchia.
現時，我們已清楚太陽女神螺綱（Helcionelloida）的化石並不是腹足綱的成員，而是軟體動物門之下的一毎獨立的綱，帕哈耶夫 (2006, 2007)亦因此建議成立這一個綱，以取代過往在布歇特和洛克羅伊的腹足類分類 (2005年)的分類中有關「系統分類地位未定的古代軟體動物」分類。這個綱包括下列各物種：
Subclass Archaeobranchia Parkhaev, 2001Subclass Divasibranchia Minichev & Starobogatov, 1975
Subclass Dextrobranchia Minichev & Starobogatov, 1975
Patellogastropoda根據Nakano & Ozawa (2007)的研究重寫，但這個建議有爭議。根據中野等人的舊文獻，青螺科（Acmaeidae）被認為是蓮花青螺科（Lottiidae）的同種異名；另一方面，; the subfamily Pectinodontinae is elevated to Pectinodontidae; a new family Eoacmaeidae with the new type genus "Eoacmaea" is established. The remaining three families (Neolepetopsidae, Daminilidae, Lepetopsidae) are moved into the Lottioidea, like this: 但數年後中野智之再發表文獻，指當初研究的結果是由於實驗標本受到污染所引致，因此又將青螺科和蓮花青螺科分開。不過網上有不少數據庫已跟隨中野的建議合併了兩個科。其他受影響的文獻仍不時可以找到。
一個Depressizona新物種的發現，令Geiger (2009) elevated the subfamily Depressizoninae to family level as Depressizonidae. Also two subfamilies (the Larocheinae from the Scissurellidae, and the Temnocinclinae from the Sutilizonidae) were upgraded to family level as the Larocheidae and the Temnocinclidae.
The superfamily Trochoidea was redefined by Williams et al. (2008) and the superfamily Turbinoidea is no longer used. Phasianelloidea and Angarioidea were created as new superfamilies.
Trochoidea
Phasianelloidea
Angarioidea
Bandel (2007) described four new families within the Neritopsoidea. He classified Neritopsoidea in the order Neritoina within the superorder Cycloneritimorpha and within the subclass Neritimorpha. Bandel (2007) recognizes Natisopsinae (in Neritopsidae by Bouchet & Rocrois 2005) at the family level, as Naticopsidae. Bandel's classification looks like this:
superfamily Neritopsoidea
The family Provannidae was moved to the superfamily Abyssochrysoidea Tomlin, 1927. In addition, a new family Hokkaidoconchidae Kaim, Jenkins & Warén, 2008 was named.
The subfamily Semisulcospirinae, within the Pleuroceridae, was elevated to the family level Semisulcospiridae by Strong & Köhler (2009).
Bandel (2006) made numerous changes in the following clades: Cerithimorpha/Cerithioidea, Turritellimorpha/Turritelloidea, Murchisonimorpha/Orthonematoidea, Campanilimorpha/Campaniloidea and Ampullinoidea, Vermetimorpha/Vermetoidea.
Fehse (2007) elevated both the subfamily Pediculariinae and the tribe Eocypraeini (which were previously in the family Ovulidae) to family level, based on both morphological research and molecular phylogeny research. Families within Cypraeoidea are now as follows:
Within the Tonnoidea, Beu (2008) raised the subfamily Cassinae to the rank of family: Cassidae Latreille, 1825.
Bouchet et al. (2011) have updated taxonomy of the superfamily Conoidea:
Janssen (2005) established a new family, Praecuvierinidae.
Gosliner et al. (2007) elevated the subfamily Babakininae to the family level as Babakinidae.
Golding et al. (2007) established new families within the Amphiboloidea:
Uit de Weerd (2008) moved two families Urocoptidae and Cerionidae to the newly established superfamily Urocoptoidea, based on molecular phylogeny research as follows:
superfamily Urocoptoidea
Other authors also made numerous taxonomic changes within Orthalicoidea in 2009-2012.
Schrödl & Neusser (2010) rearranged the taxonomy of the Acochlidiacea.
Swennen & Buatip (2009) described a new family Aitengidae, which was later moved to Acochlidiacea by Jörger et al. (2010).
Malaquias et al. (2009) rearranged the taxonomy of the Cephalaspidea "sensu lato": reinstated Architectibranchia, reinstated Runcinacea, reinstated Scaphandridae as a valid family, but they did not use superfamilies.
Subsequently Malaquias (2010) moved "Bullacta exarata" (formerly the only member of Bullactidae) into the family Haminoeidae.
Sutcharit et al. (2010) established a new family Diapheridae within the Streptaxoidea in 2010.
Jörger et al. (2010) redefined major groups of Heterobranchia and created the new clades 和。
Maeda et al. (2010) confirmed the placement of "Cylindrobulla" within the Sacoglossa.
Thompson (2010) redefined subfamilies in Spiraxidae, moving Euglandininae and Streptostylinae (from where they had been in the Oleacinidae per Bouchet & Rocroi (2005)) so that they became subfamilies of Spiraxidae.
Johnson (2011) resurrected the family Cadlinidae.
Thompson (2012) established a new family, Epirobiidae.
Thompson & Naranjo-García (2012) described a new family Echinichidae within Xanthonychoidea.