Tiberius Cornelis Winkler (May 28, 1822 – April 4, 1897) was a Dutch anatomist, zoologist and natural historian, and the second curator of geology, paleontology and mineralogy at Teylers Museum in Haarlem.

His studies took him to the library of Teylers Museum in Haarlem, and his subsequent article on the weever in the popular journal Album der Natuur established him as an expert on fishes.

He immediately set to work to catalogue the Museum's entire collection of fossils, which at the time was unnumbered and, frequently, undocumented.

On the advice of the prominent Utrecht natural historian Pieter Harting, he applied a numerical system in which the fossils were divided into Periods (Paleozoic, Mesozoic and Caenozoic) and sorted from 'high' to 'low'.

Most famous among these was Charles Darwin's seminal Origin of Species, which appeared in Dutch one year after its English release in 1859.

[6] Winkler was an active supporter of Volapük, a constructed language invented by the Catholic priest Johann Martin Schleyer.