Three Worlds can refer to:
Popper's three worlds, an ontological framework by Karl Popper Three Worlds (Escher), a print by M. C. Escher Three Worlds (book), an 1877 religious book Three Worlds (film), a 2012 French film Three Worlds Theory, the Maoist concept Three-world model, the western political concept
See also Trilok (disambiguation) Third World (disambiguation) Trailokya, the use of this term in Hinduism and Buddhism