Sierra de Segura is a mountain range of the Prebaetic System in the Jaén Province in Spain. It is named after the ancient town of Segura de la Sierra and it gives its name to the Segura River. Its highest point is the 1,993 m high Las Banderillas peak.

This mountain range is surrounded by the Sierra Nevada, the Sierra de Cazorla, and Sierra de Baza mountain ranges. It gives its name to the Sierra de Segura Comarca, an administrative division that includes a number of villages that are scattered across the range.

The Sierras de Cazorla, Segura y Las Villas Natural Park is a protected area including about 80% of the Segura Range, as well as the neighboring Cazorla Range and some adjacent mountainous areas.

• Baetic System
• El Tranco de Beas Dam
• Las Villas

• Media related to Sierra de Segura at Wikimedia Commons
• Parque Natural Sierras de Cazorla, Segura y Las Villas
• Turismo Activo en el Parque Natural de las Sierras de Cazorla, Segura y Las Villas