World War II saw rapid technological innovation in response to the needs of the various combatants. Many different weapons systems evolved as a result.

This list does not consist of all weapons used by all countries in World War II.

• List of World War II weapons of Australia
• List of World War II weapons of Canada
• List of World War II weapons of China
• List of World War II weapons of Denmark
• List of World War II weapons of Finland
• List of World War II weapons of France
• List of World War II weapons of Germany
• List of World War II weapons of Greece
• List of aircraft of Hungary in World War II
• List of World War II weapons used in Ireland
• List of World War II weapons of Italy
• List of World War II weapons of Japan
• List of World War II weapons of Norway
• List of World War II weapons of Portugal
• List of World War II weapons of Romania
• List of World War II weapons of Switzerland
• List of World War II weapons of the Soviet Union
• List of World War II weapons of Thailand
• List of World War II weapons of the United Kingdom
• List of World War II weapons of the United States
• Captured US firearms in Axis use in World War II
• List of World War II weapons of Yugoslavia

• List of World War II military equipment
• List of common World War II infantry weapons
• List of prototype World War II infantry weapons
• List of secondary and special-issue World War II infantry weapons
• German designations of foreign artillery in World War II
• German designations of foreign firearms in World War II