Euhelopodidae is a family of sauropod dinosaurs of disputed membership and affinities, which contains Euhelopus and its close relatives.

[3] Some studies have concluded that Euhelopus is a non-neosauropod closely related to Mamenchisaurus, which would make Euhelopodidae equivalent to Mamenchisauridae.

A joint study by Jeffrey Wilson and Paul Upchurch, who had previously taken opposite sides in the debate, concluded that Euhelopus was closely related to titanosaurs.

[5] Michael D'Emic (2012) formulated the first phylogenetic definition of Euhelopodidae, defining it as the clade containing "neosauropods more closely related to Euhelopus zdanskyi than to Neuquensaurus australis".

The results of their phylogenetic analysis, which included several other euhelopodid taxa, are shown in the cladogram below:[6] Huanghetitan Europatitan Tastavinsaurus Phuwiangosaurus Tangvayosaurus Qiaowanlong "Huanghetitan" ruyangensis Ruyangosaurus Yongjinglong Erketu Gobititan Euhelopus Silutitan Padillasaurus Titanosauria