List of famous architects & designers who work in the art nouveau style or movement, listed alphabetically with photos when available. If you're an aspiring architect or designer, these popular art nouveau architects should be looked upon for inspiration. You can find bits of information about these renowned art nouveau designers, such as when they were born and what their nationalities are. Items include everything from Antoni Gaudí to Charles Rennie Mackintosh. This list answers the question, "Who are the most famous art nouveau architects?"