Mark XVIII or Mark 18 often refers to the 18th version of a product, frequently military hardware. "Mark", meaning "model" or "variant", can be abbreviated "Mk."
Mark XVIII or Mark 18 may refer to:
Mark XVIII or Mark 18 often refers to the 18th version of a product, frequently military hardware. "Mark", meaning "model" or "variant", can be abbreviated "Mk."
Mark XVIII or Mark 18 may refer to: