Hans Friedrich Albrecht Erlenmeyer (March 20, 1900, in Strasbourg – May 29, 1967, in Basel) was a German-Swiss chemist and collector of antiquities.
The Erlenmeyers partially loaned their pieces to the Antikenmuseum Basel and to major international exhibitions and also wrote scientific publications in the field of archaeology.
In the late 1950s or early 1960s, they bought large parts of the so-called Keros Hoard from an art dealer of Greek descent.
Greece later claimed restitution of the largest idol because, like the entire hoard, it was illegally smuggled out of the country from a looted site.
Since this happened before the 1970 UNESCO Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property, the collectors' actions were considered in good faith.