After working as an adviser for Prime Minister Raymond Barre, Antoine de Clermont-Tonnerre went on to become chairman of the Société Française de Production (SFP) in January 1979. Two years later, he was appointed President of the media group Éditions Mondiales. He extended the group’s activities into the film and television sector with the creation of Revcom in 1984 and the acquisition of Les Films Ariane in 1986.

In January 1992, he founded with his wife Martine de Clermont-Tonnerre, the film production company MACT PRODUCTIONS. Together they have produced or co-produced more than 40 acclaimed feature films.

Since 1992, Antoine de Clermont-Tonnerre has been President of "La Chambre syndicale des producteurs", Vice-President of the "avance sur recettes" Commission and President of Unifrance since January 2009.