The Logical Language Group, Inc. is a non-profit organization meant to serve the needs of the Lojban community. It can be contacted by various means, both online and off.

The Logical Language Group is also called "la lojbangirz." (/lah-lozh-BAHN-geerz./), its Lojban name. It is frequently referred to with the abbreviation LLG. It was founded informally in 1987, and incorporated in 1988. The U. S. Internal Revenue Service approved its status as a 501(c)(3) non-profit educational/scientific charity in 1989, making donations and grants to the organization deductible under U. S. tax law. LLG materials on this site are provided on a "use with attribution" basis.

One will frequently hear the term Lojban Central, which refers to the leadership of the LLG, perceived (rightly or wrongly) as leading the language, and language development in particular.