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