Dolná Breznica (Hungarian: Alsónyíresd) is a village and municipality in Púchov District in the Trenčín Region of north-western Slovakia.

In historical records the village was first mentioned in 1388.

The municipality lies at an altitude of 297 metres and covers an area of 8.361 km. It has a population of about 818 people.

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

• Roman Catholic church records (births/marriages/deaths): 1788-1895 (parish B)

• List of municipalities and towns in Slovakia

• Official website
• https://web.archive.org/web/20080111223415/http://www.statistics.sk/mosmis/eng/run.html
• Surnames of living people in Dolna Breznica