Antonin Dubost (6 April 1842, L'Arbresle, Rhône – 16 April 1921, Paris) 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.
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.