This Means War

This Means War may refer to:

• This Means War (film)
• This Means War (Attack Attack! album)
• This Means War (Tank album)
• This Means War!, an album by Petra
• "This Means War" (Nickelback song)
• "This Means War", a song by AC/DC on the album Blow Up Your Video
• A repeated line in the Groucho Marx film Duck Soup
• "This Means War" (Avenged Sevenfold song)