Nanna Ditzel (October 6, 1923 in Copenhagen - June 17, 2005 in Copenhagen) was a Danish furniture designer.
She studied at the Danish School of Arts and Crafts and the Royal Danish Academy of Fine Arts in Copenhagen with painter Victor Isbrand, Orla Mølgaard-Nielsen, Peter Hvidt and Kaare Klint graduating in 1946. Her works include cabinet-making, jewellery, tableware and textiles. She also created jewellery designs for Georg Jensen and furniture for Frederica.