A-Class lists, while not as rigorously reviewed as featured lists, are nevertheless considered to provide a well-written and complete treatment of the topic; they pass through a review process within the project before being selected. Currently, there are 40 A-Class lists within the scope of the project.
- American Expeditionary Forces on the Western Front (World War I) order of battle
- Director General of the Indian Coast Guard
- List of active United States Marine Corps aircraft squadrons
- List of battleships of Greece
- List of British divisions in World War II
- List of British infantry brigades of the Second World War (101–309 and named)
- List of British infantry brigades of the Second World War (1–100)
- List of British mobile brigades during the Second World War
- List of commanders of the British 2nd Division
- List of Knight's Cross of the Iron Cross recipients (Bn–Bz)
- List of Knight's Cross of the Iron Cross recipients (D)
- List of Knight's Cross of the Iron Cross recipients (E)
- List of Knight's Cross of the Iron Cross recipients (F)
- List of Knight's Cross of the Iron Cross recipients (G)
- List of Knight's Cross of the Iron Cross recipients (Ha–Hm)
- List of Knight's Cross of the Iron Cross recipients (Hn–Hz)
- List of Knight's Cross of the Iron Cross recipients (I)
- List of Knight's Cross of the Iron Cross recipients (J)
- List of Knight's Cross of the Iron Cross recipients (Ka–Km)
- List of Knight's Cross of the Iron Cross recipients (Kn–Kz)
- List of Knight's Cross of the Iron Cross recipients (L)
- List of Knight's Cross of the Iron Cross recipients (M)
- List of Knight's Cross of the Iron Cross recipients (N)
- List of Knight's Cross of the Iron Cross recipients (O)
- List of Knight's Cross of the Iron Cross recipients (P)
- List of Knight's Cross of the Iron Cross recipients (Q)
- List of Knight's Cross of the Iron Cross recipients (R)
- List of Knight's Cross of the Iron Cross recipients (Sa–Schr)
- List of Knight's Cross of the Iron Cross recipients (Schu–Sz)
- List of Knight's Cross of the Iron Cross recipients (T)
- List of Knight's Cross of the Iron Cross recipients (U)
- List of Knight's Cross of the Iron Cross recipients (V)
- List of Knight's Cross of the Iron Cross recipients (W)
- List of Knight's Cross of the Iron Cross recipients (X–Z)
- List of Knight's Cross of the Iron Cross with Oak Leaves, Swords or Diamonds recipients of the Waffen-SS
- List of Partisan detachments in Bosnia and Herzegovina
- List of protected cruisers of France
- List of tanks in the Spanish Civil War
- List of World War I aces credited with 5 victories
- Names inscribed on the Equestrian statue of Frederick the Great