John Nicholas Sandlin (February 24, 1872 – December 25, 1957) was an American lawyer, jurist, and politician who served eight terms as a U.S. Representative from Louisiana from 1921 to 1937.

John Sandlin was born near Minden, Webster Parish, Louisiana on February 24, 1872.

He was a delegate to the Democratic National Convention in 1916, when President Woodrow Wilson was re-nominated for a second term.

He was not a candidate for renomination in 1936, choosing instead to run an unsuccessful campaign for nomination to the United States Senator.

This article incorporates public domain material from the Biographical Directory of the United States Congress