Esperanto culture refers to the shared cultural experience of the Esperantujo, or Esperanto-speaking community. Despite being a constructed language, Esperanto has a history dating back to the late 19th century, and shared socio-cultural norms have developed among its speakers. Some of these can be traced back to the initial ideas of the language's creator, Ludwig Zamenhof, including the theory that a global second language would foster international communication. Others have developed over time, as the language has allowed different national and linguistic cultures to blend together. Some Esperanto speakers have also researched the language's ideologies.

A constructed language is a language whose phonology, grammar, and vocabulary, instead of having developed naturally, are consciously devised for some purpose, which may include being devised for a work of fiction. A constructed language may also be referred to as an artificial, planned or invented language, or a fictional language. Planned languages are languages that have been purposefully designed; they are the result of deliberate, controlling intervention and are thus of a form of language planning.