Auguste Victor Laurent Casimir-Perier (20 August 1811, Paris – 6 June 1876) was a French diplomat and political leader. He was the son of 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. In 1846 he resigned from the service to enter the legislature as deputy for the département of Seine, a constituency which he exchanged for another one in the département of Aube after the Revolution of 1848.