Klucz ([klut͡ʂ]) is a village in the administrative district of Gmina Ujazd, within Strzelce County, Opole Voivodeship, in south-western Poland. It lies approximately 7 kilometres (4 mi) northwest of Ujazd, 8 km (5 mi) south of Strzelce Opolskie, and 36 km (22 mi) southeast of the regional capital Opole.