Jablonica is a village and municipality in Senica District in the Trnava Region of western Slovakia.

An old castle was destroyed in an Ottoman raid in 1663 and subsequently rebuilt by the then-owners from the family.

The Apponyis lost its property in the aftermath of World War I, after which it changed hands several times during the Interwar period.

It then served as a grain storage facility, a home for the occupying Wehrmacht, an elementary school, and a leather storehouse.

In 2017 it was purchased by a non-profit group that intends to renovate it and convert into a hotel and cultural facility.