The Musaeum or Mouseion at Alexandria (Ancient Greek: Μουσεῖον τῆς Ἀλεξανδρείας), which included the famous Library of Alexandria, was an institution founded by Ptolemy I Soter or, perhaps more likely, by his son Ptolemy II Philadelphus.
Musaeum atau Mouseion di Alexandria (bahasa Yunani Kuno: Μουσεῖον τῆς Ἀλεξανδρείας), yang mencangkup Perpustakaan Alexandria, adalah sebuah lembaga yang didirikan oleh Ptolemy I Soter atau mungkin putranya Ptolemy II Philadelphus.