Stephen Payne Nash (August 26, 1821 – June 4, 1898) was a lawyer in New York City and an expert in church law.
He was born in Albany, New York on August 26, 1821 to David Nash and Hannah Payn.
Upon graduating, Nash worked for Esek Cowen in Saratoga Springs and later Augustus Bockes, both justices of the New York Supreme Court.
He became an expert in laws concerning religious corporations, and represented the New York diocese of the Episcopal Church in many legal matters from 1880 onward.
He became a trustee of the New York diocese and traveled to England to serve as an expert witness before the Committee of Privileges of the House of Lords on behalf of the Anglican Church in 1885.