Hoosier is the official demonym for the people of the U.S. state of Indiana. The origin of the term remains a matter of debate, but "Hoosier" was in general use by the 1840s, having been popularized by Richmond resident John Finley's 1833 poem "The Hoosier's Nest". Indiana adopted the nickname "The Hoosier State" more than 150 years ago.

"Hoosier" is used in the names of numerous Indiana-based businesses and organizations. "Hoosiers" is also the name of the Indiana University athletic teams. As there is no accepted embodiment of a Hoosier, the IU schools are represented through their letters and colors alone. In addition to universal acceptance by residents of Indiana, the term is also the official demonym according to the U.S. Government Publishing Office.