Gretheria

{{Short description|Genus of flowering plants}}

{{automatic taxobox

|taxon = Gretheria

|authority = Duno & Torke (2022)

|subdivision_ranks = Species

|subdivision =

• Gretheria campylacantha {{small|(L.Rico & M.Sousa) Duno & Torke}}
• Gretheria sonorae {{small|(S.Watson) Duno & Torke}}

|subdivision_ref = [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77303792-1 Gretheria Duno & Torke]. Plants of the World Online. Retrieved 11 September 2023.

}}

Gretheria is a genus of flowering plants in the legume family, Fabaceae. It includes two species of trees native to tropical and subtropical North America, ranging from northern Mexico to Costa Rica.

• Gretheria campylacantha {{small|(L.Rico & M.Sousa) Duno & Torke}} – southwestern Mexico and Honduras, Nicaragua, and Costa Rica
• Gretheria sonorae {{small|(S.Watson) Duno & Torke}} – northern Mexico