The Morongo Band of Mission Indians is a federally recognized tribe in California, United States.

The first official "Captain" of Potrero Ajenio (aka San Gorgonio Agency), recognized by the Bureau of Indian Affairs, was the hereditary leader of the Maarrenga, known to Americans by his English name, John Morongo.

[8] Joe Saubel, a Morongo tribal member and the last pure speaker of Pass Cahuilla, died in 2008.

[9] In 2012, the Limu Project announced that it had successfully reconstructed Pass Cahuilla, and it is offering an online course.

[11] The tribe opened a small bingo hall in 1983, which became the foundation of what is now one of the oldest Native gaming enterprises in California.

The tribe joined with the Cabazon Band of Mission Indians in suing the local government, a case that eventually was decided by the U.S. Supreme Court.

On February 25, 1987, the court upheld the right of sovereign Indian tribes to operate gaming enterprises on their reservations.

It maintains the Malki Museum Press, which publishes the Journal of California and Great Basin Anthropology and scholarly books on Native American culture.

The reservation is also home to the Limu Project, a tribal community-based nonprofit organization that helps families preserve knowledge of their indigenous languages, history, and cultural traditions.