欧帕兹（英文：Out-of-place artifact，简称OOPArt）一词是由美国博物学家伊万·桑德森（Ivan T. Sanderson）发明，用于史学、人类学、考古学、主流科学和禁忌人类学上，主要针对近些年来从古老地层中掘出的、已如动植物化石般的怀疑人造物品，意即在不该出现的地方出土的加工物，日本称为「时代错误遗物」（日语：时代错误遗物／じだい さくご いぶつ）。欧帕兹被年轻地球创造论、外星生物创造论、古代太空人的支持者当成证据。反对此观点的人会视之为伪科学。

Out-of-place artifact (OOPArt) is a term coined by American naturalist and cryptozoologist Ivan T. Sanderson for an object of historical, archaeological, or paleontological interest found in a very unusual or seemingly impossible context that could challenge conventional historical chronology by being "too advanced" for the level of civilization that existed at the time, or showing "human presence" well before humans were supposed to exist.