Megasthenes was an ancient Greek historian, diplomat, ethnographer and explorer in the Hellenistic period. He described India in his book Indica, which is now lost, but has been partially reconstructed from literary fragments found in later authors that quoted his work. Megasthenes was the first person from the Western world to leave a written description of India.

Indika is an account of Mauryan India by the Greek writer Megasthenes. The original work is now lost, but its fragments have survived in later Greek and Latin works. The earliest of these works are those by Diodorus Siculus, Strabo (Geographica), Pliny, and Arrian (Indica).