Stephen Pearl Andrews (March 22, 1812 - May 21, 1886) was an anarchist abolitionist, Modern Times community founder (with Josiah Warren, 1799 - 1874), born at Templeton, Massachusetts, USA. 

He was a lawyer, author (The Sovereignty of the Individual) and free love advocate; it is said that he knew 32 languages.

He started with a brilliant career at the American bar and sacrificed it by his zealous work for the abolition of slavery. Andrews also contributed frequently to the Truth Seeker, a journal of rational thought that is still in publication (other eminent contributors included Thomas Edison, Clarence Darrow, Mark Twain, Robert G. Ingersoll, H. L. Mencken, Elizabeth Cady Stanton, and Margaret Sanger). By the 1860s he was propounding an ideal society called Pantarchy, and from this he moved on to a philosophy he called "Universology", which stressed the unity of all knowledge and activities.