Santeri "Santtu" Nuorteva (born Alexander Nyberg; 29 June 1881 – 31 March 1929) was a Finnish-born Soviet journalist and one of the first members of the Finnish Parliament, where he served as a member of the Social Democratic Party from 1907 to 1908 and 1909 to 1910. Nuorteva emigrated to the United States in 1911 and played a leading role in the sizable Finnish-language socialist movement in America. At various times, he edited the magazines Säkeniä ("The Spark") and the newspapers Toveri ("The Comrade") and Raivaaja ("The Pioneer"). He was the official spokesman in America for the Finnish Socialist Revolutionary government of 1918 and, after its overthrow, was influential in the official affairs of the government of Soviet Russia in the United States. In 1920, he was deported to Soviet Russia.
His daughter was the famous Finnish-Soviet spy Kerttu Nuorteva.