Marcus Jansen was born 1968 in Manhattan, New York. He has been referred to as a cartographer of conflict and "One of the most Important American Painters of our Time."

Son of a west-indien mother and German father, Jansen is a world traveler and was first influenced by an emerging and rebellious Graffiti art movement from New York City in the 1980’s. As a former soldier, he was later discovered and mentored by former Museum Director and Art Historian Jerome A. Donson, (Director of the American Vanguard Exhibitions Europe 1961), who was responsible for preparing exhibitions for artists including Jackson Pollock, Robert Rauschenberg, Jasper Johns, Willem de Kooning and Franz Kline. Donson referred to Jansen's work as being "reminiscent of the Ash-Can School” and as the “innovator” of modern expressionism in Jansen’s French published catalog in 2005.

Jansen was raised between New York City and Moenchengladbach Germany where he studied briefly at the Kunstgewerbe Schule the Berufsfachschule fuer Gestaltung at the time and completed a three year craft as a commercial house painter (Maler). After his military discharge, Jansen started selling paintings on the streets of New York between Prince Street and Broadway before transforming his life from serving in War to a professional painter.
Jansen's first major International monograph titled, “Marcus Jansen - DECADE” was published by the leading art book publisher SKIRA Editore, Milan Italy, joining other leading American painters such as Julian Schnabel and Jean Michel Basquiat.. The book features a foreword by notorious London Art Dealer, Steve Lazarides, who is also recognized as Banksy’s first agent.

His first European solo museum exhibition was held at the Triennale di Milano Museum where critics hailed his show titled after his book “Marcus Jansen DECADE” as among the top 10 shows to see in Italy. The Museum exhibition was accompanied by a documentary film titled, "Marcus Jansen - Examine & Report", a film by John Scoular that spotlights Marcus Jansen, dissecting his motivation for painting while examining the direction of his socio-political urban influences.

The Jansen World Tour includes museum exhibitions at the Kallmann Museum, Ismaning, Munich and The Baker Museum, Naples, Florida, as well as many other major museums. Alongside these exhibitions, Jansen’s second globally distributed monograph titled "Marcus Jansen AFTERMATH", published by Hirmer Verlag Munich, is to be released March 2017. The publication holds text by Professor Dr. Manfred Schneckenburger and German art critic Dr. Gottfried Knapp as well as a foreword by Art Historian and Professor, Dr. Dieter Ronte, the Former Museum Director of the Kunst Museum in Bonn, who also dubbed Jansen's show in Germany at Galerie Kellermann as "Sensational."

Jansens works are included in major collections around the world; U.S. Department of State, Art in Embassies Program, and UNESCO in Paris France. Museum collections include the Moscow Museum of Modern Art (MMOMA), The New Britain Museum of American Art, The PERMM Museum of Contemporary Art, The Kemper Museum of Contemporary Art, The National Taiwan Museum of Fine Art, and the Smithsonian Institution in Washington DC.