Ana Claudia Michels (b. 31 July 1981 in Joinville, Santa Catarina, Brazil) is a Brazilian supermodel.

She started modelling at the age of 14 with the Mega Agency, when she was introduced to the owners by a friend. She is known for her Victoria's Secret catalogue work, her Calvin Klein advertisements, being featured on the cover of a catalog for Le Lis Blanc, a noted Brazilian clothing company, and catwalk modelling. Her father's parents were from Bavaria and her mother's grandparents were from Württemberg and Brandenburg.