Peter Joakim Lassen (24 October 1930) is a Danish businessman and art collector. He is the founder of Montana Møbler and started the production of the storage system Montana in 1982. Peter J. Lassen trained as a naval officer in the Royal Danish Navy. Later, he was hired by his father-in-law's company, Fritz Hansen A/S, where he served as managing director from 1969 until 1979. During this period, Lassen worked close together with architects Arne Jacobsen, Jørn Utzon, Piet Hein and Verner Panton. The developed Verner Panton's Tivoli chair and started the production of the 6060 bookcase in 1974, which is the storage system, he later developed into what we now know as Montana. In 1982, Lassen started Montana Møbler in Haarby on Funen in Denmark. Here he served as CEO until 2009. Peter J. Lassen's interest in contemporary art means that he has contributed to art and culture in Denmark through the years by sponsoring various artists.