Vernon Ellis Cosslett, FRS (16 Jun 1908 - 21 Nov 1990) was a British microscopist.

He worked with Bragg at the Cavendish Laboratory, Cambridge University on electron microscopy and founded the Electron Microscopy Department. He developed improved x-ray machines. Cite error: A <ref> tag is missing the closing </ref> (see the help page).

He was elected president of the Royal Microscopical Society ^[1]