Dem'ianiv Laz (Ukrainian: Дем'янів Лаз, Russian: Демьянов Лаз) is a mass burial site of victims of NKVD executions committed in the wake of the German occupation of Ivano-Frankivsk, Ukraine in 1941.

In 1970, following the Radio Liberty broadcast about Dem'ianiv Laz, the site's landscape was changed by heavy machinery to hinder any future attempts to excavate it.

Despite these efforts, in 1989 remains of more than 500 men, women and children were uncovered during excavation performed by a local branch of the Memorial society. The memorial complex "Dem'ianiv Laz" was opened near the excavation site in 1998.