Olší

Olší may refer to places in the Czech Republic:


 * Olší (Brno-Country District), a municipality and village in the South Moravian Region
 * Olší (Jihlava District), a municipality and village in the Vysočina Region
 * Olší, a village and part of Opařany in the South Bohemian Region
 * Olší nad Oslavou, a village and part of Velké Meziříčí in the Vysočina Region