Rzedowskia is a monotypic genus of flowering plants belonging to the family Celastraceae.

[1] It contains one known species, Rzedowskia tolantonguensis, native to eastern Mexico.

[1] The genus name of Rzedowskia is in honour of Jerzy Rzedowski (1926–2023), a Mexican botanist.

His focus was on Mexican floristics, taxonomy, and ecology.

[2] The Latin specific epithet of tolantonguensis refers to Tolantongo, a box canyon and resort in the state of Hidalgo, where the plant was found.