Marcus "Dodde" Wallenberg Jr., was a Swedish banker, business manager and member of the Swedish Wallenberg family. He was the most influential representative for the Swedish industrial tradition and Swedish business’ during the 20th century. He was the CEO of Stockholms Enskilda Bank 1946–1958 and during half a century – from the early 1930s until his death in 1982 – he led and reconstructed many of Sweden's largest companies. During World War Two Marcus together with Erik Boheman were appointed to conduct the Swedish trade negotiations.

The Wallenberg family is a prominent Swedish family renowned as bankers, industrialists, politicians, bureaucrats and diplomats, present in most large Swedish industrial groups, like Ericsson, Electrolux, ABB, SAS Group, SKF, AIK, Atlas Copco, Saab AB, and more. In the 1970s, the Wallenberg family businesses employed 40% of Sweden's industrial workforce and represented 40% of the total worth of the Stockholm stock market.