Robert Kerr (1755 – 11 October 1813) was a scientific writer and translator from Scotland.
Kerr was born in Roxburghshire as the son of a jeweller. He studied medicine at the University of Edinburgh and practised at the Edinburgh Foundling Hospital as a surgeon. He translated several scientific works into English, such as Antoine Lavoisier's work of 1789, Traité Élémentaire de Chimie, published under the title Elements of Chemistry in a New Systematic Order containing All the Modern Discoveries, in 1790. In 1792, he published The Animal Kingdom, the first two volumes of a four-tome translation of Linnaeus' Systema Naturae, which is often cited as the taxonomic authority for a great many species. (He never did the remaining two volumes.)
In 1794 he left his post as a surgeon to manage a paper mill. He lost much of his fortune with this enterprise. Out of economical necessity he began writing again in 1809, publishing a variety of minor works, for instance a General View of the Agriculture of Berwickshire. His last work was a translation of Cuvier's Recherches sur les ossements fossiles de quadrupedes, which was published after Kerr's death under the title "Essays on the Theory of the Earth".
His other works included a massive historical study entitled A General History and Collection of Voyages and Travels in eighteen volumes. Kerr began the series in 1811, dedicating it to Sir Alexander Cochrane, K.B., Vice-Admiral of the White. Publication did not cease following Kerr's death in 1813; the latter volumes were published into the 1820s.