Henri Chermezon (12 May 1885, Paris – 15 January 1939, Strasbourg) was a French botanist.From 1906 he worked as a botanical assistant at the Sorbonne in Paris.
In 1936 he was named director of its botanical garden.He was a specialist in regards to tropical Cyperaceae (sedges), especially plants native to Madagascar.
He also published works on sedges found in Senegal, Gabon, the Comoros, Belgian Congo and Ubangi-Shari.
Plants with the specific epithet of chermezonii commemorate his name, an example being Carex chermezonii (Luceño & MartĂn-Bravo).