Megalobulimus is a genus of air-breathing land snail, a terrestrial gastropod mollusk in the subfamily Megalobuliminae within the family Strophocheilidae (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

[2] Megalobulimus is the type genus of the subfamily Megalobuliminae.

Species within the genus Megalobulimus include (all species from Brazil are listed):[3] Shells of terrestrial snails, mainly of the genus Megalobulimus, are found in fluvial shellmound (called sambaqui in Brazil) on the Capelinha archaeological site from Paleo-Indian culture of early Holocene.

[6] The shell of Megalobulimus sp.

(local name: "churito") is used in the traditional ethnomedicine of Northwest Argentina when babies are hyperactive and cannot sleep well, then it is advised to put a shell under a pillow.