American theatrical producer and director, founder of the New York Shakespeare Festival and the Public Theatre. He was a major innovative force in the American theatre in the second half of the 20th century.

Papp studied acting and directing at the Actor's Laboratory Theatre in Hollywood from 1946 to 1948, when he became its managing director. Two years later he took a position as assistant stage manager of the national touring company of Arthur Miller's Death of a Salesman. In 1954, after two years as a stage manager for the Columbia Broadcasting System (CBS) television network in New York City, Papp founded the New York Shakespeare Festival, which became a unique institution in the New York theatrical milieu. The festival gave free performances of Shakespearean plays in various locations around the city, including outdoor productions in Central Park. (In 1962 the company received a newly built, permanent home in the park, the Delacorte Theatre.) Papp worked with little or no pay for several years to establish the festival, producing and directing the majority of the plays himself. He remained its artistic director until 1991.

In 1967 he founded the New York Shakespeare Festival Public Theatre, which concentrated on contemporary and experimental dramas. Several of its productions eventually traveled to Broadway, including Hair (1967), Sticks and Bones (1971), That Championship Season (1972), and A Chorus Line (1975). The latter musical became one of the longest-running shows in Broadway's history. (The old Astor Library in Lower Manhattan was “recycled” into a seven-theatre complex to serve as the Public's physical plant.) Papp was among the most dynamic Off-Broadway producers from the 1960s through the 1980s, and he championed many innovative playwrights, including David Rabe and John Guare, and talented actors, such as George C. Scott and Meryl Streep, who later achieved prominence.