Nathan Ross Margold (1899 - December 17, 1947) was a Romanian-born American lawyer.
He was a municipal judge in Washington, D.C., and the author of the 1933 Margold Report to promote civil rights for African-Americans through the courts.
He was also a supporter of Native American civil rights.
In addition to his legal career, Margold is remembered as the father of adult film pioneer William Margold.