Are Call of Duty Black Ops and Modern Warfare in the same universe?

Call of Duty: Warzone, Black Ops, Zombies and Modern Warfare Are Finally All Connected

ModernWarzone on X: If Activision goes after @PlutoniumMod next then there will be no safe way to play Black Ops 1, Black Ops 2, Modern Warfare 3 or World at War online

Are all CoD campaigns in the same universe?

Learn more about Call of Duty HQ, the game launcher for Call of Duty

Modern Warfare 3 Zombies teaser hints at ties with Black Ops Cold War universe

Modern Warfare III: Call Of Duty is back - and childhood fans are now the ones making it, Science & Tech News

India Today Gaming

Call of Duty: World at War, Call of Duty Wiki

Call of Duty®: Modern Warfare® II Launch — Everything You Need to Know Before the New Era Begins with Campaign Early Access*