Nathan Straus, Jr. (May 27, 1889 in New York City – September 13, 1961 in Massapequa, Nassau County, New York) was an American journalist and politician from New York.
He was the son of Nathan Straus (1848–1931), co-owner of Macy's department store. He attended Princeton University, and Heidelberg University. He worked as a reporter for The New York Globe from 1909 to 1910; and was editor and publisher of Puck magazine from 1913 to 1917. During World War I he fought as an ensign with the United States Navy.
After the war, he became Assistant Editor of the New York Globe, but left in 1920 because of the paper's support for Republican presidential candidate Warren G. Harding. Instead, he entered politics as a Democrat, and was a member of the New York State Senate (15th D.) from 1921 to 1926, sitting in the 144th, 145th, 146th, 147th, 148th and 149th New York State Legislatures. He was Chairman of the Committee on Agriculture from 1923 to 1924.