Hrastje

Hrastje may refer to:

In Croatia:
 * Hrastje, Croatia, a village in the Municipality of Sveti Ivan Zelina

In Slovenia:
 * Hrastje, Kranj, a settlement in the Municipality of Kranj
 * Hrastje, Maribor, a settlement in the Municipality of Maribor
 * Hrastje, Šentjernej, a settlement in the Municipality of Šentjernej
 * Hrastje, Šentjur, a settlement in the Municipality of Šentjur
 * Hrastje–Mota, a settlement in the Municipality of Radenci
 * Hrastje ob Bistrici, a former settlement in the Municipality of Bistrica ob Sotli
 * Hrastje pri Cerkljah, a settlement in the Municipality of Brežice
 * Hrastje pri Grosupljem, a settlement in the Municipality of Grosuplje
 * Hrastje pri Mirni Peči, a settlement in the Municipality of Mirna Peč