Vrtača (pronounced [ʋəɾˈtaːtʃa]) is a small remote settlement in the Gorjanci Mountains in the Municipality of Kostanjevica na Krki in eastern Slovenia, right on the border with Croatia. The area is part of the traditional region of Lower Carniola. It is now included in the Lower Sava Statistical Region.

• Brabec, Ivan (1966). "Mješoviti govori na sjevernoj periferiji hrvatskosrpskog jezika". Ljetopis Jugoslavenske akademije znanosti i umjetnosti. 77: 421–425. ISSN 0373-9902.

• Vrtača on Geopedia