Peter Mark Roget
![Print of a portrait of Peter Mark Roget, from Medical Portrait Gallery by Thomas Pettigrew](/Images/godic/202502/02/Roget_P_M4025.jpg")
![Roget plaque, University of Edinburgh](/Images/godic/202502/02/Peter_Mark_Roget_plaque,_Edinburgh_University4026.jpg")
![Peter Mark Roget c. 1865](/Images/godic/202502/02/Peter_Mark_Roget4026.jpg")
Peter Mark Roget FRS (UK /ˈrɒʒeɪ/ or US /roʊˈʒeɪ/; 18 January 1779 – 12 September 1869) was a British physician, natural theologian and lexicographer. He is best known for publishing, in 1852, the Thesaurus of English Words and Phrases (Roget's Thesaurus), a classified collection of related words.