Baca (surname)
Baca is a Spanish surname. Notable people with the surname include:
- Baca family of New Mexico
 - Elfego Baca (1865–1945), American gunman, lawyer and politician
 - Geovany Baca (born 1971), Honduran boxer
 - Jimmy Santiago Baca (born 1952), American poet and writer
 - Joe Baca (born 1947), American politician
 - Joe Baca Jr. (born 1969), American politician
 - José A. Baca (1876–1924), American politician
 - Joseph F. Baca (born 1936), chief justice of the New Mexico Supreme Court
 - Lee Baca (born 1942), American sheriff
 - Mariano Prado Baca (1776–1837), Central American lawyer and politician
 - Polly Baca (born 1941), American politician
 - Rafael Baca (born 1989), Mexican footballer
 - Susana Baca (born 1944), Peruvian singer