|Date||May 23, 2018|
|Outcome||Thanos wins, half of the Xandarians die|
|Black Order||Nova Empire|
|None||Half of the Xandarians|
|Next massacre||Attack on the Statesman|
|Infobox • Talk page|
The Xandarian massacre was a massacre between Thanos and the Black Order and the Nova Empire that resulted in half of the Xandarian population dying. The massacre occurred on Xandar, and it was on this planet that Thanos was able to retrieve the Power Stone, beginning the Infinity War.