Decimus Junius Brutus (84-43 BC), Roman general, served first in Gaul under Caesar, who afterwards made him commander of his fleet. Not to be confused with Marcus Brutus.
Later he was made master of the horse and governor of Gaul, and Caesar, who held him in much esteem, made him his heir in the event of Octavian's death. But in spite of this, he was one of the conspirators in the plot against his benefactor.
Afterwards he fought with brief success against Antony, but was betrayed and put to death by the latter soon after the siege of Mutina in 43 BC.