- Royal armours of the Tudor and Stuart kings
- Arms and armour of the English Civil Wars, including the Armoury from Littlecote House; British and foreign military weapons from the Board of Ordnance and MOD Pattern Room collections;
- Hunting and sporting weapons
- And an exceptional collection of oriental arms and armour.
The Royal Armouries also has a significant collection of fine and decorative arts, and a special collection of material relating to the Tower of London.
This includes antique prints and drawings, paintings, early photographs, stereoscopes and lantern slides, and rare books.
The Royal Armouries library contains material relating to the history, development and use of arms, armour, artillery and fortifications, and to the Tower of London.
It has special collections of original military manuals, drill books, and fencing manuals. The collection amounts to some 30,000 books and pamphlets, 10,000 journals and magazines, and 6,000 auction sales catalogues.
There is a large Picture Library containing some 70,000 images of objects in the collection, which are available for purchase and reproduction. The Archives contains records relating to the Museum, collections of research material from scholars such as Sir James Mann and Howard Blackmore, as well as the records of the Royal Small Arms Factory at Enfield.