Ebroin (died 680 or 681) was the Frankish mayor of the palace of Neustria on two occasions; firstly from 658 to his deposition in 673 and secondly from 675 to his death in 680 or 681. In a violent and despotic career, he strove to impose the authority of Neustria, which was under his control, over Burgundy and Austrasia.
Following the failed coup of the Pippinid mayor Grimoald the Elder in Austrasia, the Merovingian court resided in Neustria. According to the Liber historiae Francorum, during the reign of Chlothar III the mayor Erchinoald of Neustria died. A council of Franks then elected Ebroin as his replacement.
The Life of Saint Eligius records that as of the middle 670s Ebroin had only one child, a son named Bobo; Bobo was then convalescing from an illness contracted during his adolescence. Based on that, Bobo was likely born around 660.
The English scholar Bede (IV.1) took notice of an anecdote concerning Ebroin in 668. Bede tells that Ebroin waylaid an Englishman returning from Rome, for fear that the Byzantine Emperor (Constans II, residing in Syracuse) was plotting an alliance against his rule. It follows that Ebroin by 668 had arrogated to himself the de facto rule of Neustria and so (in theory) "of the Franks"; it also follows that Ebroin had a streak of paranoia.
It remains unclear how direct was Ebroin's influence over the next four years (the Liber historiae may imply that Chlothar had roused himself by then), but when Chlothar died in 673 Ebroin was back in charge. Another brother Theuderic III was raised as king of Neustria, still viewed as the core kingdom "of the Franks".