Kostanjevica

Kostanjevica may refer to several places in Slovenia:


 * Kostanjevica na Krasu, a settlement in the Municipality of Miren-Kostanjevica
 * Kostanjevica na Krki, capital of the Municipality of Kostanjevica na Krki
 * Kostanjevica, Šentrupert, a settlement in the Municipality of Šentrupert
 * Municipality of Kostanjevica na Krki
 * Municipality of Miren-Kostanjevica