The Latin-script letter Z (Russian: зет, zet) is one of several symbols (also including "V" and "O") painted on military vehicles of the Russian Armed Forces involved in the 2022 Russian invasion of Ukraine, speculated to help task forces distinguish themselves from other allied or enemy forces.

As a militarist symbol, the "Z" has been used in Russian propaganda, and by Russian civilians as a sign of support for the invasion. Outside Russia, the symbol has been banned from public display in several states. The "Z" symbol has been called a zwastika in the media, derived from the word swastika. The symbols "Z" and "V" have been banned by the Verkhovna Rada of Ukraine as symbols of the Russian military invasion.

(Source: Wikipedia)