This comprehensive reference work investigates the vast landscape of world drama from its earliest origins to contemporary productions. Authored by John Gassner, a noted critic and scholar of theater, the Encyclopaedia draws upon extensive research to provide a panoramic view of dramatic literature and performance across all five continents. It aims to serve as an authoritative guide, detailing the evolution, key figures, and significant works that have shaped theatrical traditions globally.

The Reader's Encyclopaedia of World Drama is recognized as a foundational reference for students and enthusiasts of theater. Its broad scope and detailed entries provide a valuable resource for understanding the global history of dramatic arts. The work is particularly noted for its accessibility while maintaining scholarly rigor, making complex theatrical histories comprehensible.