Olompali, California

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Olompali, California is the site of a former Native American settlement in Marin County. It is about 5 miles south of Petaluma and is now inside Olompali State Historic Park. The place sits on the waterfront at the foot of Burdell Mountain.

The Coast Miwok called the site Õlõmpõ'llï, and the name likely means "southern village" or "southern people." The Coast Miwok lived in this area as early as 6000 BC, and Olompali was a year‑round village because nearby resources supported continuous living. By around the year 1200, it was a major center in Marin County and may have been the largest native village there.

There was a matriarchal society among the local Indigenous people, including Olompali, called the Máien. From 1816 to 1818, ten Máien women from Olompali were baptized at Mission San Jose de Guadalupe, and from 1814 to 1822 about 250 Olompali residents were baptized.

After California became part of the United States, the last chief Ynitia (born Huemox) kept ownership of Olompali. A 1911 Marin County article noted that relics and remains of the Olompali people were still found around the county. Mounds from the settlement were leveled in 1874–1875 to fill land in Marin County.