Our Lady of the Lake University (OLLU) is an independent Catholic, co-ed university located in San Antonio, Texas, United States. It was founded in 1895 by the Sisters of Divine Providence, a religious institute originating in Lorraine, France, during the 18th century. The Texas chapter of the institute still sponsors the university. Our Lady of the Lake University was the first San Antonio institution of higher education to receive regional accreditation, and its Worden School of Social Service is the oldest school of Social Work in Texas.
In 1895, construction began on the main campus of Our Lady of the Lake College. By 1896, high school educational programs were under way. The first college program began in 1911 as a two-year curriculum for women. In 1919, the curriculum was expanded to four years and the institution was admitted to membership in the Texas Association of Colleges. Graduate study began in 1942 and was coeducational from its inception; all programs became fully coeducational in 1969. In 1975 the name of the institution was changed from Our Lady of the Lake College to Our Lady of the Lake University of San Antonio.