Extreme Aggression is the fourth studio album by German thrash metal band Kreator released in 1989. While the band had already gained a sizeable following in the US due to their 1987 tour with the crossover thrash band D.R.I., this album introduced many American fans to Kreator, primarily through heavy rotation of the "Betrayer" music video on MTV's Headbangers Ball, which was partly shot at the Acropolis in Athens, Greece. The beginning of the song "Love Us or Hate Us" was used in an early 1990s promo ad by the Los Angeles radio station KNAC. This was their first issued in the US by Epic Records. The album was also available on picture disc vinyl.
The album's original artwork was of a man standing in front of a bathroom mirror looking at the reflection of his face falling off, exposing Kreator's mascot demon underneath. However, it was quickly replaced with a new artwork, depicting an image of the band in front of an orange background.