Lalish (Kurdish: لالش, romanized: Laliş, also known as Lalişa Nûranî) is a mountain valley and temple in Shekhan, Duhok Governorate in Iraqi Kurdistan. It is the holiest temple of the Yazidis. It is the location of the tomb of the Sheikh Adi ibn Musafir, a central figure of the Yazidi faith.

The temple is above the town of Shekhan, which had the second largest population of Yazidi prior to the persecution of Yazidis by ISIL. The temple is about sixty kilometers north of Mosul and 14 kilometers west from the village Ayn Sifna. The temple is built at about 1,000 meters above sea level and situated among three mountains, Hizrat in the west, Misat in the south and Arafat in the north.

At least once in their lifetimes, Yazidis are expected to make a six-day pilgrimage to Lalish to visit the tomb of Şêx Adî and other sacred places. These other sacred places are shrines dedicated to other holy beings. There are two sacred springs called Zamzam and the Kaniya Spî (White Spring). Below Sheikh Adi's sanctuary, which also includes the tomb of Sheikh Hesen is situated a cave.

Lalish is also the location of pirrā selāt (Ṣerāṭ Bridge) and a mountain called Mt. ʿErefāt which has sites significant in other faiths. Yazidi Kurds living in the region are also expected to make a yearly pilgrimage to attend the autumn seven-day Feast of the Assembly, which is celebrated between 6th and 13th of October.

It has been located in the Shekhan District since 1991.