The Hahamog'na, commonly anglicized to Hahamongna /hɑːˈhɑːməŋɡə/ and spelled Xaxaamonga in their native language, are a tribe of the Tongva people of California. Their language belongs to the Uto-Aztecan family.
The Hahamogna inhabited the Verdugo Mountains foothills and San Rafael Hills; the Arroyo Seco in the westernmost San Gabriel Valley area around present day Pasadena and Altadena; and the easternmost San Fernando Valley area north of the Los Angeles River around present day Glendale; all in Los Angeles County, California.
Two settlements named Hahamongna, California have been located. The Hahamogna band have also been called Pascual and Pascualite Indians, after which the 1843 Mexican land grant Rancho San Pascual, that included their part of the Arroyo Seco, was named.
Most correctly Hahamog'na is the name of this tribe's chief, and the tribe's name and the place in which they live also take this name. Other derivatives have been shown in an adjectival style thus referring to them as the "Hahamovic Indians."