Ralf Metzenmacher (July 26, 1964 – August 3, 2020) was a German painter and designer. He was an expert Retro-Art, a mixture between art and product design. He was born in Aachen, Germany. Between 1991 and 2004 he worked as a designer for Puma. As director, towards the end of his time there he was responsible for the Footwear Europe and Accessories International division.