Earth-based organisations

• Al-Qa'ida
• 
  Alex Hopkins' team
• Category:Alien defence organisations
• Alliance (Original Sin)
• Argentinean army
• Artificial Light Studios
• The Association
• Category:The Auctioneers
• Category:Australian organisations

• Branson Inheritance
• Brotherhood of the New Dawn

• Canadian Space Agency
• 
  Central Military Commission
• 
  A Charitable Earth
• Chinese army
• Cobalt Corporation
• Collection Squad
• Conglomerate
• Crawley and Area Dog Training (Obedience) Society
• Crystal Oceans Initiative

• Children of Destiny
• Disaster Recovery Committee
• Divine Intervention
• DOCTO(R)

• Earth Alliance
• Category:Earth businesses
• Earth Command
• 
  Earth Empire
• Earth Reptile Council
• Category:Earth-based institutions
• Category:European organisations

• The Fellowship
• Filipino Army
• First Great and Bountiful Human Empire
• Fourth Great and Bountiful Human Empire
• 
  French Resistance

• G8
• GSO

• IDEA
• IIF
• IMF
• Imperial Army Air Fleet
• Imperial Japanese Army
• Imperial Landsknechte
• Imperial Navy
• International Ice Patrol
• International Space Command

• 
  Jack Harkness' team

• Ke Le Division
• Knights Templar
• Kodo Ha
• Kwantung Army
• Kwantung Army Intelligence

• 
  Lend-a-Hand
• Little Brothers
• Lives Not Bullets

• MADAM
• Magnate
• Marine Rescue Brigade
• 
  Men in Black
• 
  MIAOW
• Militia
• Montana Republican Militia
• Mr Copper Foundation

• NATO
• New Roman Empire
• North Sea Boating Club

• 
  Ofsted
• Omega Sector
• Order of Saint Peter
• Order of the White Peacock
• Outbreak Management Team

• Category:P.R.O.B.E.
• Paragon Studios
• Peace Party
• Peripatetic medical squad
• Pinkerton Agency
• Planet 3

• Red Army
• Robot Flying Squad
• Roman army

• Sakura Kai
• Scientific Reform Society
• 
  Scindia-Corp
• Sea Base Command
• 
  Second Great and Bountiful Human Empire
• Shadow Directory
• Shining Dawn Corporation
• Somnus Foundation
• Soroptimists
• Space Command HQ
• Space Security Service
• Survey Four

• Terran Survey Corps
• Third Great and Bountiful Human Empire
• 
  Tong of the Black Scorpion
• Tosei Ha
• Traveller (Love and War)
• 
  Tycho Project

• UN Deep Space Force Group 1
• UNASA
• 
  Unified Intelligence Taskforce
• Unispace Security
• UNISYC
• Category:US organisations

• World Ecology Bureau
• World Health Organization
• World Pest Control
• World State

• Yesterways LTD