Aegis is the shield used by Athena and Zeus.

Aegis may also refer to:

• Aegis (Trey Rollins), in Marvel Comics
• Aegis (Lady of All Sorrows), in Marvel Comics
• A.E.G.I.S., a fictional organisation in the anime Gate Keepers
• Aegis, the shield of Thalia Grace in Rick Riordan's 2007 novel The Titan's Curse
• Aigis (Persona), or Aegis, in role-playing game Persona 3
• Aegis, the shield wielded by Gallantmon in the Digimon series
• Aegis VII, a planet in the video game Dead Space
• AEGIS, a government organisation in the role-playing game Conspiracy X
• The Aegis, a pair of characters in Xenoblade Chronicles 2
• AEGIS (Aperture Employee Guardian and Intrusion System), in Portal Stories: Mel

• Aegis (newspaper), in Oakland, California, U.S.
• The Aegis (newspaper), a local newspaper in Harford County, Maryland, U.S.
• The Aegis (weekly newspaper), in London, England, 1818
• The Aegis, a Dartmouth College publication

• Aégis (album), by Theatre of Tragedy, 1998
• Aegis (band), a Filipino rock band

• AEGIS: Guardian of the Fleet, a 1994 video game

• Aegis Defence Services, a British security services company
• Aegis Group, now Dentsu International

• Africa-Europe Group for Interdisciplinary Studies, a research network
• Aegis the Union, a British trade union
• Aegis Trust, a British anti-genocide NGO
• Allied Employees Guild Improving Sega, a video game trade union
• Association for the Education and Guardianship of International Students, a British organisation
• Aid for the Elderly in Government Institutions, a British pressure group

• AIDS Education Global Information System, a database of AIDS information
• AEGIS (astronomy) (All-Wavelength Extended Groth Strip International Survey)
• Artificially Expanded Genetic Information System, a synthetic DNA analog experiment
• AEGIS (SuperCam), (Autonomous Exploration for Gathering Increased Science) on the Perseverance rover
• AEgIS experiment, the Antimatter Experiment: Gravity, Interferometry, Spectroscopy
• AEGIS SecureConnect, a network authentication system
• AEGIS, or Domain/OS, the original Apollo operating system
• LG Aegis, a mobile phone
• AEGIS Authenticator, a one-time password application for Android

• Aegis Combat System, an American integrated naval weapons system
  • Aegis Ballistic Missile Defense System, an American program
• Kimber Aegis, a series of pistols

• All pages with titles beginning with Aegis
• All pages with titles containing Aegis
• Aizis or Aigis, a Dacian town and later Roman castrum in Dacia