Lalish is a mountain valley and temple located in the Nineveh Plains of northern Iraq,. 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.

Yazidis, also spelled Yezidis, are a Kurdish-speaking endogamous religious group who are indigenous to Kurdistan, a geographical region in Western Asia that includes parts of Iraq, Syria, Turkey and Iran. The majority of Yazidis remaining in the Middle East today live in Iraq, primarily in the governorates of Nineveh and Duhok.