Antonin Dubost was a French journalist, State Councillor and Senator. He served as President of the French Senate from 1906 to 1920. He was a member of the Democratic Republican Alliance.
Dubost was born at L'Arbresle, Rhône. He was a candidate for President of the French Republic in 1913. As President of the Senate during all of the first World War, he was a strong advocate of forcing Germany to make reparations.
He co-authored a book on the history of legal enforcement, studying the use of imprisonment and deportation. He died in Paris, aged 79.