- 'cat
- 10347th Independent Battalion
- 106th Battlecruiser Squadron
- 107FT
- 10th Century PD
- 117th Heavy Cruiser Squadron (RHN)
- 11th Century PD
- 12th Century PD
- 12th Fleet
- 12th Fleet (Haven)
- 13th Century PD
- 14th Century PD
- 15th Century PD
- 16th Century PD
- 17th Century PD
- 18th Century PD
- 18th Security and Protection Group
- 19th Century PD
- 1st Century PD
- 1st Fleet (Haven)
- 20th Century PD
- 216 Kleopatra
- 21st Century PD
- 2nd Century PD
- 2nd Marsh
- 303rd Special Commando Assault Force, Expeditionary
- 3rd Century PD
- 3rd Interurban Security Force
- 4th Century PD
- 5019th Special Battalion
- 5019th Special Battalion (GSMC)
- 5th Century PD
- 6th Century PD
- 70 Virginis System
- 7707 Bulwar Heinleina
- 7H
- 7th Century PD
- 887Th Solarian Marine Regiment
- 887th Solarian Marines Regiment
- 8th Century PD
- 93rd Destroyer Squadron (RHN)
- 9th Century PD
- A. M. Walsingham-Chatfield
- AAoW
- ABF
- ACTA
- AD-1002-07-02-22
- AG-1
- AG-12
- AG-2
- AG-24
- AG-25
- AG-31
- AG-31(a)
- AG-93
- AG-93(a)
- AG-94
- AItMSAD
- AMC
- AMS Angelika Thörnich
- AMS Karawane
- AMS Krause Rosig
- AMS Sittich
- AMS Spica
- AMS Sywan Oberkirch
- AN/SPG-26
- AN/SPG-26/a
- AN/SPG-28
- AN/SPG-29
- AN/SPG-29/a
- AN/SPG-29/b
- AN/SPG-8
- AOV
- AP/SPG-15
- AR-7(b)
- ARC
- ART
- ASL
- ASNF
- ATC
- AWoG
- A Beautiful Friendship
- A Beautiful Friendship (Novel)
- A Beautiful Friendship (novel)
- A Call To Arms
- A Call to Arms
- A Call to Arms (novel)
- A Call to Duty
- A Call to Duty/Chapters
- A Call to Insurrection
- A Call to Vengeance
- A Grand Tour
- A Rising Thunder
- A Rising Thunder/Chapters
- A Ship Named Francis
- A Ship named Francis
- A Travesty of Hope
- A Whiff of Grapeshot
- Aaloka Menendez
- Aamodt Corporation
- Aampersand's
- Aaron's Rod
- Aaron Hearns
- Aaron Sidemore
- Aaron Tilborch
- Aaronson
- Aatifa Villanueva
- Abbot
- Abbot (Manticore)
- Abbott
- Abednego Haftner
- Abelard Boniece
- Aberu
- Aberu and Harmon
- Aberu family
- Abhijat Wilson
- Abigail Hearns
- Abiola Wilhelmsen
- Abner
- Abner Laidlaw
- Abner Layson
- Abner Mackenzie
- Abraham
- Abraham Jackson
- Abraham Jurgens
- Abraham Spencer
- Abraham Templeton
- Abrams
- Absolon Badrani
- Abteilung III
- Acedo
- Acharya Hu-Jiang
- Achilles
- Achilles (Treecat)
- Achilles (treecat)
- Aciler System
- Act of Annexation
- Act of Toleration
- Acuminata
- AdAstra Games
- Ad Astra
- Ad Astra Games
- Ad Astra class
- Adair Foundation
- Adam (Hades prisoner)
- Adam Damakos
- Adam Dryslar
- Adam Gerrick
- Adam Golbatsi
- Adam Montague
- Adam Omikado
- Adam Siml
- Adam Siml (17th Century PD)
- Adam Towson
- Adam Vangelis
- Adam Šiml
- Adam Šiml (17th Century PD)
- Adamon
- Adams
- Adams (Grayson)
- Adams (Haven)
- Adamson
- Adao Ukhtomskoy
- Adcock
- Adder
- Adderson
- Addison Faust
- Addison System
- Address from the Throne
- Adelaide
- Adelaide Bradshaw
- Adelaide Granger
- Adelaide Laforge
- Adelaide Meyers
- Adelaide Summervale
- Adelaide System
- Adelaide Tyson
- Adelbert Bouvier
- Adele Klontz
- Adele Wasserman
- Adelina Arif
- Adelita Salazar y Menéndez
- Adenauer
- Adenauer Hewitt
- Adenauer Kellogg
- Adib
- Adjuster
- Adler
- Adler System
- Adler class
- Administration Committee (Grayson)
- Admiral
- Admiral Byng
- Admiral Cluster Bomb
- Admiral Coatsworth
- Admiral Corsini
- Admiral Gold Peak
- Admiral Koga
- Admiral Kuzak
- Admiral Low Delhi
- Admiral Massengale
- Admiral Oversteegen
- Admiral Parnell's Task Force
- Admiral Parnel’s Task Force
- Admiral Polydoru
- Admiral Rollins
- Admiral Rollins' Task Force
- Admiral Stag
- Admiral White Haven
- Admiral of the Green
- Admiral of the Red
- Admiralty
- Admiralty Building
- Admiralty Court
- Admiralty House
- Adolf Breshnikov
- Adolf Lafontaine
- Adoption
- Adrian
- Adrian Bayside
- Adrian Carson
- Adrian Hagros
- Adrian Lipsky
- Adrian Luff
- Adrian Mayhew
- Adrian Toboc
- Adrienne
- Adrienne Cross
- Adrienne Warshawski
- Adrienne Warshawski University
- Adrienne Winton
- Advance reading copy
- Advanced Tactical Center
- Advanced Tactical Course
- Advanced Tactical Course building
- Adão Ukhtomskoy
- Aegis
- After Landing
- Agafia Duchovny
- Agamemnon-class
- Agamemnon class
- Agard
- Agatá Wodoslawski
- Agnes Celeste
- Agnes DeGroot
- Agnes Nordbrandt
- Agnes de Groot
- Agnieszka Krzywicka
- Agueda-Stine Hyper Bridge
- Agueda Astro Control
- Agueda System
- Agueda Terminus
- Ahmed Griggs
- Aidan
- Aidan Adcock
- Aidan Crowder
- Aikawa
- Aikawa Kagiyama
- Aikawa Navarre
- Ailsa MacMinn
- Ainsley Jedrusinski
- Ainspan
- Air
- Air Incident
- Air System
- Air car
- Aircar
- Aitschuler
- Aivars Terekhov
- Aj Krit
- Ajax
- Ajax (Manticore)
- Ajax System
- Ajay Astro Control Services
- Ajay System
- Ajay System Navy
- Ajay Terminus
- Akahito Fitzpatrick
- Akimoto
- Akron System
- Al-Bakiya System
- Al-Bakr
- Al-Fanudahi
- Al-Nassir
- Al (Grayson)
- Al Carlucci
- Al Hale
- Al Hijaz Mountains
- Al Hillyard
- Al Stennis
- Alain Boutin
- Alan
- Alan Coker
- Alan Jeffers
- Alan McGwire
- Alant
- Alasdair Heemskerk
- Alastair MacKeggie
- Albatross class
- Albert
- Albert (Grayson)
- Albert Dallas
- Albert Hodges
- Albert Howard
- Albert Hurst
- Albert Kaminski
- Alberta Maguire
- Alberto Wexler
- Albertson
- Albrecht Detweiler
- Alcohol catalyzer
- Aldebaran
- Aldib
- Aldib System
- Aldokim de Castilho
- Aldona Anisimovna
- Aldonza Navarro
- Aldus O'Brien
- Alec Dimitri
- Alec Sárközy
- Alecta
- Alecta Yearman
- Alecto Matheson
- Alekan Slowacki
- Aleksandr
- Aleksandr Zivonik
- Aleksandra
- Aleksandra Tonkovic
- Alena Špánková Malá
- Alenka
- Alenka Borderwijk
- Alenka Mestrovic
- Alenka Overgaard
- Alessandra
- Alessandra Farms
- Alessandra Giovanni
- Alessandra Havlicek
- Alesta Cardot
- Alethea Kourniakis
- Alex Horn
- Alex Maybach
- Alex Simak
- Alex Thomas
- Alex Xu
- Alexander
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