Reginar (Reginhere) (died 17 April 818), Frankish nobleman, son of Meginhere, confidant of Charlemagne, and grandson of the conspirator Hardrad.
Bernard began plotting with a group of noblemen including the king’s friend Eggideo, the chamberlain Reginhard, and Reginar.
The rebels planned to dethrone Louis, putting him and his family to death, and to install Bernard as sole ruler of the Empire.
Ratbold, Bishop of Verona, and Suppo, Count of Brescia, were among the first to warn Louis of the plot, reporting the belief that all of Italy would support the insurgents.
Louis himself led his troops at Châlon, where Bernard and his chief partisans, ill-supported, quickly surrendered.