Aide or AIDE may refer to:

• Aide Iskandar (born 1975), Singaporean professional soccer player
• Charles Hamilton Aide (1826–1906), English author and artist

• An aide is a personal assistant
  • aide-de-camp military officer
• Aide (deity), a purported Basque deity
• Aide-mémoire, a document serving as a memory aid, a reminder or memorandum
• AIDE (software), (Advanced Intrusion Detection Environment). An open source host-based intrusion detection system
• Alliance of Independent Democrats in Europe, a former European political party
• Advanced Intrusion Detection Environment, an intrusion detection software package

• Aid (disambiguation)
• Aides (disambiguation)