Olší may refer to places in the Czech Republic:
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Olší (Brno-Country District)
Olší is a municipality and village in Brno-Country District in the South Moravian Region of the Czech Republic. It has about 400 inhabitants.
Olší lies approximately north-west of Brno and south-east of Prague
Prague ( ; cs, Praha ; ...
, a municipality and village in the South Moravian Region
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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
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