Algie Martin Simons (1870–1950) was an American socialist journalist, newspaper editor, and political activist, best remembered as the editor of The International Socialist Review for nearly a decade. Originally an adherent of the Socialist Labor Party of America and a founding member of the Socialist Party of America, Simons' political views became increasingly conservative over time, leading him to be appointed on a pro-war "labor delegation" to the government of revolutionary Russia headed by Alexander Kerensky in 1917. Simons was a bitter opponent of the communist regime established by Lenin in November 1917 and in later years became an active supporter of the Republican Party.