Avče is a settlement on the left bank of the Soča River in the Municipality of Kanal ob Soči in the Littoral region of Slovenia. It includes the hamlets of Dolnji Avšček, Gor(e)nji Avšček, and Langa along Avšček Creek southeast of the main settlement, Nadavče to the west, and Spodnji Log and Vrtače to the north along the railroad.