Auguste Victor Laurent Casimir-Perier (20 August 1811, Paris – 6 June 1876) was a French diplomat and political leader. He was the son of Prime Minister Casimir Pierre Perier and the father of President Jean Casimir-Perier. He entered the diplomatic service, being attached successively to the London, Brussels and St Petersburg embassies and in 1843 became minister plenipotentiary at Hanover.