'''Mier''' might refer to one of the following:
==Places== * Mier, Asturias, parish in northern Spain * Ciudad Mier, city and municipality in northern Mexico ** Mier Expedition, from the Republic of Texas into Mexico, 1842-43 * Mier, Indiana, community in the U.S. * Mier Local Municipality, in South Africa * Mier Barracks, a historic building in Warsaw, Poland * Mier Halls, market halls in Warsaw, Poland * Mier Park, an urban park in Warsaw, Poland
==People== * Francisco Mier y Torre, 18th-century governor of the New Kingdom of León * Henry Mier, Uruguayan footballer * Manuel Mier y Terán, 19th-century Mexican general * Servando Teresa de Mier, 18th- and 19th-century Catholic priest of New Spain * Hiram Mier, Mexican footballer * Wilhelm Mier, 18th-century Polish military officer and statesman
==Other== * Manchester Independent Economic Review (MIER) * Mirów, Warsaw, a neighbourhood in Warsaw, Poland, named after Wilhelm Mier * Crown Horse Guard Regiment, informally known as ''Mier Guard'', an 18th-century cavalry unit of the Crown Army of the Polish–Lithuanian Commonwealth {{disambiguation}}