Søren Marinus Jensen (5 May 1879 – 6 January 1965) was a Danish sport wrestler who competed in the 1906 Intercalated Games and the 1908 and 1912 Summer Olympics.
He won medals at each Games; however, the gold medals he won at the 1906 Games are no longer considered to be Olympic medals.
He remains Denmark's most successful wrestler at the Olympics.
In addition, he was World Champion in 1905 and won multiple European championship silver medals.