Lartetotherium is an extinct genus of rhinocerotid that lived during the Miocene in Europe and possibly China.
The type species Lartetotherium sansaniense was a unique cursorial rhinoceros with a distinctly long horn. Its teeth were brachyodont, indicating its diet contained a high quantity of soft plants and a lower proportion of woody material.
A 2023 study reassigned the species Dicerorhinus cixianensis (Chen and Wu, 1976) from the Middle Miocene of Cixian County, Hebei Province, China, to the genus. The species is known from a single partial skull and juvenile mandible, notably small in size.'
Analysis of ô<sup>18</sup>O and ô<sup>13</sup>C values suggests that L. sansaniense was an inhabitant of relatively open environments.