Decimus Laberius (c. 105 BC43 BC) was a Roman eques and writer of mimes (farces).
Laberius seems to have been a man of caustic wit, who wrote for his own pleasure. In 46 BC, Julius Caesar ordered him to appear in one of his own plays in a public contest with the actor Publilius Syrus. Laberius pronounced a dignified prologue on the degradation thus thrust on his sixty years, and directed several sharp allusions against the dictator, including apparently predicting Caesar's demise: Needs must he fear, who makes all else adread. Later that day, he added:
None the first place for ever can retain - <br>But, ever as the topmost round you gain, <br>Painful your station there and swift your fall.
Caesar awarded the victory to Publilius, but restored Laberius to his equestrian rank, which he had forfeited by appearing as a mimus. Laberius was the chief of those who introduced the mimus into Latin literature towards the close of the Republican period. He seems to have been a man of learning and culture, but his pieces did not escape the coarseness inherent to the class of literature to which they belonged; and Aulus Gellius accuses him of extravagance in the coining of new words. Horace speaks of him in terms of qualified praise.