Ygnacio

Ygnacio may refer to:

Given name:
 * Ygnacio Coronel (1795–1862), settler in the Pueblo de Los Ángeles of Mexican Alta California
 * Luis Ygnacio Liendo (born 1980), amateur Venezuelan Greco-Roman wrestler in the men's lightweight category
 * Ygnacio Martínez (1774–1848), important figure in the development of Contra Costa County, California
 * Ygnacio Sepulveda (1842–1916), one of the first two judges of the Superior Court in Los Angeles County, California
 * Ygnacio del Valle (1808–1880), rancher and landowner in the eastern Santa Clara River Valley, California, United States
 * Ygnacio Vallejo (1807–1890), Californio military commander, politician, and rancher

Places:
 * San Ygnacio (disambiguation)
 * San Ygnacio Creek, small stream of water located in Webb County, Texas
 * Ygnacio Palomares Adobe, a one-story adobe in Pomona, California, built between 1850 and 1855 as a residence for Don Ygnacio Palomares