Steirodon is a genus of large phaneropterine katydids in the family Tettigoniidae, native to tropical and subtropical forests in South America, Central America and Mexico.

They are fairly large to very large leaf-like katydids that are mostly green, between 5 and 13 cm (2.0–5.1 in) long depending on exact species, and females generally reach a larger size than males of the same species; S. careovirgulatum where females typically are 12–13 cm (4.7–5.1 in) long is the largest katydid of the Americas and among the world's largest Orthoptera. As far as known, Steirodon and all other members of the tribe Steirodontini are entirely herbivorous.

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