Aglaia, Aglaea, Aglaïa, Aglaja, or Aglaya (Ἀγλαΐα) is an ancient Greek female name and may refer to:

• Aglaia or Aglaea (mythology)
  • Aglaia (Grace), one of the Charites in Greek mythology
• Saint Aglaia of Rome, 4th century, a companion of Saint Boniface of Tarsus

• Aglaia (plant), a genus of trees in the mahogany family
• Drosophila aglaia, an endangered species of fly from Hawaii
• The butterfly genus Aglais (Dalman, 1816)
• 47 Aglaja, an asteroid

• Aglaia ^[ru], a ballet by Filippo Taglioni.
• Aglaia, an opera by Heitor Villa-Lobos

• Aglaia (given name)
• HMS Aglaia, an 18th-century British ship

• Aglaja (disambiguation)
• Aglae (disambiguation)