Olivarez might refer to:
- Olivarez, Seville, a municipality in the Seville province of Spain
- House of Olivares
- Gaspar de Guzmán, Count-Duke of Olivares, seventeenth-century Spanish statesman
- Olivarez de Júcar, Spain, a municipality in Cuenca (province)
- Antonio de Olivares, Spanish Franciscan (1630 - 1722) known by officiate at the first Mass celebrated in Texas, for contributing to the founding of San Antonio and for his exploration in this city.
- Miguel de Olivarez (1675-1768), Chilean Jesuit and historian
- Rubén Olivares, Mexican professional boxer