10B
# 10B

10B or X-B may refer to:

* Oflag X-B, a World War II German POW camp for officers located near Nienburg am Weser
* Stalag X-B, a World War II German Prisoner-of-war camp located near Sandbostel
* A Mazda Wankel engine model
* Boron-10 $(^{10}B),$ an isotope of boron
