Renzo Rosso is an Italian entrepreneur and a businessman. He is the founder of Diesel and the president of OTB Group, the parent company of Maison Margiela, Marni, Viktor & Rolf, Jil Sander. In 2022, Forbes estimated his net worth to be US$3.6 billion.

Born in Brugine (Padova), since the mid-1970s Rosso has resided in Bassano del Grappa, Veneto. He got married for the third time, to Arianna Alessi, in great secrecy in Miami in March 2022, revealing it only in 2023. He has seven children (three of them work in the company): he became the father of his youngest child, a girl, at the age of 60. In an interview with CNN in 2004, Rosso said he usually spends his free time exercising, practicing Pilates, and cycling.