Maria Sergeevna Vorontsova (Russian: Мария Сергеевна Воронцова; born 1979) is a Russian-born botanist, specializing in the taxonomy of Poaceae (grasses).

She is a member of the Accelerated Taxonomy department at Royal Botanic Gardens, Kew.

In 2010, she identified a new species of Africa spiny aubergine, Solanum ruvu, which had been collected only once in the wild ten years earlier.

A subsequent expedition failed to locate it, and it is now believed to be extinct due to deforestation.

[2] • Biography on Kew Science This article about a Russian botanist is a stub.