Kaluža (Hungarian: Ungtavas) is a village and municipality in Michalovce District in the Kosice Region of eastern Slovakia.

In historical records the village was first mentioned in 1336. Before the establishment of independent Czechoslovakia in 1918, it was part of Ung County within the Kingdom of Hungary.

The village lies at an altitude of 120 metres and covers an area of 9.89 km (3.82 sq mi) (2020-06-30/-07-01).

The municipality has a population of 430 people (2020-12-31).

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

• Roman Catholic church records (births/marriages/deaths): 1742-1935 (parish B)
• Greek Catholic church records (births/marriages/deaths): 1822-1922 (parish B)

• List of municipalities and towns in Slovakia

• https://web.archive.org/web/20070513023228/http://www.statistics.sk/mosmis/eng/run.html
• Surnames of living people in Kaluza

48°49′N 22°00′E / 48.817°N 22.000°E / 48.817; 22.000