Laurence Gronlund (July 13, 1846 - October 15, 1899), born in Copenhagen, Denmark, was an American lawyer and socialist.

After graduating from the University of Copenhagen in 1865, he studied law, and moved to the United States in 1867. There he taught German in Milwaukee, Wisconsin until was admitted to the bar in 1869, at that time beginning practice in Chicago, Illinois. He became a writer and lecturer on socialism and was closely connected with the work of the Socialist Labor political party from 1874 to 1884, after which devoted himself almost exclusively to lecturing until his appointment to a post in the Bureau of Labor Statistics.

After his period of civil service, he again returned to the lecture field, and was an editorial writer for the New York and Chicago American from 1898 until his death in New York City on the 15th of October 1899.

His principal works are:

• The Coming Revolution (1880)
• The Co-operative Commonwealth in its Outlines, An Exposition of Modern Socialism (1884)
• Ça Ira!, or Danton in the French Revolution (1888)
• a rehabilitation of Danton (1890)
• Our Destiny, The Influence of Socialism on Morals and Religion (1890)
• The New Economy (1898).