Nicolaas Steelink (October 5, 1890 - April 21, 1989) was a Dutch American labor activist who was a member of the Industrial Workers of the World (IWW), an international industrial union, and an important figure in the creation of the California Soccer League, which resulted in his induction into the United States Soccer Hall of Fame. During his time as a member of the IWW, due to his involvement with the union and radical ideals, he was convicted of criminal syndicalism and sentenced to prison in 1920.