45th Division

45th Division may refer to:

Infantry divisions

• 45th Reserve Division (German Empire)
• 45th Landwehr Division (German Empire)
• 45th Infantry Division (Wehrmacht)
• 45th Rifle Division (Soviet Union)
• 45th Infantry Division (United Kingdom)
• 45th Infantry Division (United States)
• 45th Infantry Division (Poland)
• 45th Division (Spain)

Aviation divisions

• 45th Air Division (United States)