Outline_Allied Tech coop
- Lend-Lease
- Henry Tizard
- Operation Sea Lion
- Cavity magnetron
- Jet engine
- Tube Alloys
- Thompson submachine gun
- M1911 pistol
- M1919 Browning machine gun
- M1918 Browning Automatic Rifle
- M1917 Enfield
- Pattern 1914 Enfield
- M2 Browning
- Sten
- Lend-Lease Sherman tanks
- M4 Sherman
- Matilda II
- Churchill tank
- T-34
- Frank Whittle
- Rolls-Royce Merlin
- Packard V-1650 Merlin
- Grumman F4F Wildcat
- Vought F4U Corsair
- Grumman F6F Hellcat
- Bell P-39 Airacobra
- Douglas A-20 Havoc
- North American B-25 Mitchell
- Combat box
- Jimmy Doolittle
- Defence of the Reich
- British contribution to the Manhattan Project
- Bombe
- Ultra
- Bletchley Park
- Gyro gunsight
- History of radar
- Liberty ship
- List of World War II electronic warfare equipment
- RDX
- Telecommunications Research Establishment
- Torpex
- Traveling-wave tube
- Proximity fuze