CapROS (Capability-based Reliable Operating System) is an open source operating system. It is a pure capability-based system that features automatic persistence of data and processes, even across system reboots. Capability systems naturally support the principle of least authority, which improves security and fault tolerance.

Capros may refer to:

• CapROS, an open source computer operating system
• Capros (genus), a genus of fish, of the Caproidae family