AABN or AABn may refer to:

• Anti-Apartheid Beweging Nederland, a Dutch anti-apartheid movement that was active in the 1960s
• African Aurora Business Network, an African enterprise development NGO
• Several military units of the United States Marine Corps:
  • 2nd Assault Amphibian Battalion
  • 3rd Assault Amphibian Battalion
  • 4th Assault Amphibian Battalion
• Assault Armor Battalion, a military unit of the Philippine Marine Corps

• Space Superiority Systems Wing
• Space surveillance
• Space Surveillance Telescope
• Space Symposium
• Space system
• Space system (disambiguation)
• Space Systems/Loral
• Space Talk
• Space Team
• Spaceteam
• Spacetec
• Space technologies
• Space technology
• Space technology hall of fame
• Space Technology Laboratories
• Space Technology Research Vehicle
• SpaceTEC National Resource Center for Aerospace Technical Education
• Space Test Program 2
• Space tether
• Space Tethered Autonomous Robotic Satellite 2
• Space tether missions
• Space (The Arrogant Worms album)
• Space-themed works
• Space & Time
• Space / Time