B-Daman (ビーダマン Bīdaman) is a marble shooting toy produced in Japan by Takara.

The blaster's design is a humanoid figure at the centre, from which a specially made marble, is launched (but even other marbles of the same size may be used). Different attachments are used to change a B-Daman's accuracy, power, balance, control, and rapid fire. They are customizable and each have a special gimmick.