Sebald Justinus Rutgers (25 January 1879 – 14 June 1961) was a Dutch Marxist theoretician and journalist who played an important role in the Left Wing Section of the Socialist Party of America.
During World War I, Rutgers was a frequent contributor to the Left Wing socialist press in America.
[2] From 1922–1926, he led the construction of an international workers cooperative, the Kuzbass Autonomous Industrial Colony in the Kuzbas area of Siberia.
From 1930 to 1938 he worked as a consultant on the examination of large construction projects in as member of the board for foreign specialists at the Rabkrin.
A small collection of Rutgers' papers resides at the International Institute of Social History in Amsterdam.