This report presents a taxonomy and examples of potential omnicidal events resulting from artificial intelligence: scenarios where all or almost all humans are killed. These events are not presented as inevitable, but as possibilities that we can work to avoid.

Insofar as large institutions require a degree of public support in order to take certain actions, the authors hope that by presenting these possibilities in public, they can help to support preventive measures against catastrophic risks from AI.

The submission comes from Andrew Critch PhD, dated July 12, 2025, with a 420 KB PDF available for review. The work aims to foster awareness and drive institutional action toward AI safety.