Lojban is a constructed language. It was originally called Loglan by project founder Dr. James Cooke Brown, who started the language development in 1955. Loglan/Lojban has been built over four decades by dozens of workers and hundreds of supporters, led since 1987 by The Logical Language Group.

  • Lojban is designed to be used by people in communication with each other, and possibly in the future with computers.
  • Lojban is designed to be culturally neutral.
  • Lojban grammar is based on the principles of logic; but see logical language.
  • Lojban has an unambiguous grammar.
  • Lojban has phonetic spelling, and unambiguous resolution of sounds into words.
  • Lojban is simple compared to natural languages; it is easy to learn.
  • Lojban's 1300 root words can be easily combined to form a vocabulary of millions of words.
  • Lojban is regular; the rules of the language are without exception.
  • Lojban attempts to remove restrictions on creative and clear thought and communication.
  • Lojban has a variety of uses, ranging from the creative to the scientific, from the theoretical to the practical.


The Lojban homepage is http://www.lojban.org/.
Quite a few other Lojban Resources exist on the web. You should check them out, too.

Apparently it's also time the FAQ was rewritten

If you're interested in answering the question "What is a good word for X?" then please consider viewing the Terminology page. (And contributing to it if you have an answer that we don't.)


The much larger Wiki at c2.com has a whole section on Lojban and Loglan at http://c2.com/cgi-bin/wiki?LojbanLanguage. It contained more lojban content when this wiki was young, but this has grown since then.


There's an entry for 'Lojban' now also in http://www.wikipedia.com/wiki/Lojban - a 'Wiki open Encyclopaedia project' (see under "languages"!)