Baldwin II, Frankish margrave (born c. 865)

Baldwin II was the second margrave of Flanders, ruling from 879 to 918. He was nicknamed the Bald (Calvus) after his maternal grandfather, Emperor Charles the Bald.

Margrave was originally the medieval title for the military commander assigned to maintain the defence of one of the border provinces of the Holy Roman Empire or a kingdom. That position became hereditary in certain feudal families in the Empire and the title came to be borne by rulers of some Imperial principalities until the abolition of the Empire in 1806. Thereafter, those domains were absorbed into larger realms or the titleholders adopted titles indicative of full sovereignty.