Frédéric Charles Antoine Dard (29 June 1921, in Bourgoin-Jallieu, Isère, France – 6 June 2000, in Bonnefontaine, Fribourg, Switzerland) also known under the pen name San-Antonio, was a French writer. Known as an author of crime fiction and as a humorist, he was noted for his ability to blend the two genres. Though Dard also wrote serious fiction, his most successful books used a farcical tone.