Daniel Day (born August 8, 1944), known as Dapper Dan, is an African American fashion designer and haberdasher from Harlem, New York.

His influential store, Dapper Dan’s Boutique, operated from 1982 to 1992 and is most associated with introducing high fashion to the hip hop world, with his clients over the years including Eric B. & Rakim, Salt-N-Pepa, LL Cool J, and Jay-Z. In 2017, he launched a fashion line with Gucci, with which he opened a second store and atelier, Dapper Dan’s of Harlem, in 2018.