The Kugelpanzer ("ball tank") is a one-man armoured vehicle built by Nazi Germany during World War II.

It is on display in the collection of German armored vehicles at the Kubinka Tank Museum in Moscow where it is described simply as "exhibit no.

[1][2] However, another report states that it was captured at the Kummersdorf proving grounds along with the infamous Maus super-heavy tank.

Although not immediately equivalent, a possible precursor to the Kugelpanzer was a one-man World War I tank known in France as a bouclier roulant ("rolling shield").

[4] A 1936 article in Popular Science described a Texan inventor's design for a spherical armoured vehicle that was dubbed a "tumbleweed tank".