Louis "Lou" Danziger (born November 17, 1923) is an American graphic designer and design educator. He is most strongly associated with the late modern movement in graphic design, and with a community of designers from various disciplines working in Southern California in the mid-twentieth century. He is noted for his iconoclastic approach to design, and for introducing the principles of European constructivism to the American advertising vernacular. In 1998, Danziger was awarded the AIGA Gold Medal for “standards of excellence over a lifetime of work.”