Nicola Formichetti is a fashion director and fashion editor. Born in Japan, he is most widely known as the artistic director of the Italian fashion label Diesel and for being a frequent collaborator with singer-songwriter Lady Gaga. He worked two years with the French fashion house Mugler as artistic director.

Diesel S.p.A. is an Italian retail clothing company, located in Breganze, Italy. It sells denim and other clothing, footwear, and accessories. The clothing line has two different brands: Diesel and Diesel Black Gold. There is also a line for children, called Diesel Kid. The company is known for its surreal advertising campaigns.