Košické Oľšany (Slovak pronunciation: [ˈkɔʂitskeː ˈɔʎʂani]; Hungarian: Kassaolcsvár) is a village and municipality in Košice-okolie District in the Košice Region of eastern Slovakia.

In historical records, the village was first mentioned in 1288 when a part of the village belonged to Slanec Lords, and the other part to Krásna nad Hornádom's Benedictine abbey.

The village lies at an altitude of 202 metres and covers an area of 8.669 km. It has a population of about 1140 people.

The records for genealogical research are available at the state archive "Statny Archiv in Kosice, Slovakia"

• Roman Catholic church records (births/marriages/deaths): 1734-1895 (parish A)
• Greek Catholic church records (births/marriages/deaths): 1773-1905 (parish B)
• Lutheran church records (births/marriages/deaths): 1749-1894 (parish B)

• List of municipalities and towns in Slovakia

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• [2]
• Surnames of living people in Kosicke Olsany

48°43′54″N 21°20′35″E / 48.7316666667°N 21.3430555556°E / 48.7316666667; 21.3430555556